Effect of mode of delivery on perinatal outcome in severe preterm birth: systematic review and meta‐analysis Article Swipe
Eleftheria Demertzidou
,
Christos Chatzakis
,
Paolo Ivo Cavoretto
,
K. Sarafidis
,
Makarios Eleftheriades
,
Angeliki Gerede
,
Kostantinos Dinas
,
Alexandros Sotiriadis
·
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.1002/uog.26241
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.1002/uog.26241
Objective To review the evidence on the effect of mode of delivery on perinatal outcome of fetuses born before 32 weeks' gestation. Methods MEDLINE, Scopus, Cochrane Central Register of Controlled Trials (CENTRAL), the ClinicalTrials.gov registry and gray literature sources were searched, starting from the year 2000 to reflect contemporary practice in perinatal care. Non‐randomized or randomized studies that included singleton fetuses without chromosomal abnormality or major congenital defect delivered vaginally or via Cesarean section were eligible for inclusion in the analysis. Primary outcomes were neonatal death, defined as death in the first 28 days of age, and survival to discharge. Secondary outcomes were other adverse perinatal events. The ROBINS‐I tool was used to assess the risk of bias. The overall quality of evidence for the outcomes was assessed according to GRADE. Summary odds ratios (ORs) with 95% CIs were calculated, and random‐effects models were used for data synthesis. Subgroup analysis was performed for delivery before 28 weeks, delivery between 28 and 32 weeks and according to fetal presentation at delivery. Results A total of 27 retrospective studies (22 887 neonates) were included in the systematic review and meta‐analysis, all of which reported on singleton pregnancies. Among cases born before 28 weeks, vaginal delivery significantly increased the risk of neonatal death of fetuses with any type of presentation ( n = 1496) (OR 1.87 (95% CI, 1.05–3.35); I 2 = 65%, very low quality of evidence) and of fetuses with breech presentation ( n = 733) (OR 3.55 (95% CI, 2.42–5.21); I 2 = 21%, moderate quality of evidence). The odds of survival to discharge were significantly decreased among fetuses with breech presentation delivered before 28 weeks ( n = 646) (OR 0.36 (95% CI, 0.24–0.54); I 2 = 21%, low quality of evidence). Among breech fetuses born between 28 and 32 weeks, vaginal delivery increased the odds of perinatal death (intrapartum and neonatal) ( n = 1581) (OR 3.06 (95% CI, 1.47–6.35); I 2 = 0%, high quality of evidence). In non‐cephalic fetuses born between 24 and 32 weeks, vaginal delivery decreased the odds of survival to discharge ( n = 1030) (OR 0.28 (95% CI, 0.19–0.40); I 2 = 0%, moderate quality of evidence). No significant effect on mortality of mode of delivery was observed in cephalic fetuses at any gestational age. Conclusions This systematic review and meta‐analysis suggests that vaginal delivery in severe preterm birth is associated with an increased risk of neonatal and perinatal death in breech fetuses, while no significant association was observed for cephalic fetuses. © 2023 The Authors. Ultrasound in Obstetrics & Gynecology published by John Wiley & Sons Ltd on behalf of International Society of Ultrasound in Obstetrics and Gynecology.
Related Topics
Concepts
Metadata
- Type
- review
- Language
- en
- Landing Page
- https://doi.org/10.1002/uog.26241
- https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/uog.26241
- OA Status
- hybrid
- Cited By
- 11
- References
- 65
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4367668454
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
-
https://openalex.org/W4367668454Canonical identifier for this work in OpenAlex
- DOI
-
https://doi.org/10.1002/uog.26241Digital Object Identifier
- Title
-
Effect of mode of delivery on perinatal outcome in severe preterm birth: systematic review and meta‐analysisWork title
- Type
-
reviewOpenAlex work type
- Language
-
enPrimary language
- Publication year
-
2023Year of publication
- Publication date
-
2023-05-02Full publication date if available
- Authors
-
Eleftheria Demertzidou, Christos Chatzakis, Paolo Ivo Cavoretto, K. Sarafidis, Makarios Eleftheriades, Angeliki Gerede, Kostantinos Dinas, Alexandros SotiriadisList of authors in order
- Landing page
-
https://doi.org/10.1002/uog.26241Publisher landing page
- PDF URL
-
https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/uog.26241Direct link to full text PDF
- Open access
-
YesWhether a free full text is available
- OA status
-
hybridOpen access status per OpenAlex
- OA URL
-
https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/uog.26241Direct OA link when available
- Concepts
-
Medicine, Meta-analysis, Odds ratio, Randomized controlled trial, Pediatrics, Obstetrics, Cochrane Library, Vaginal delivery, Pregnancy, Surgery, Internal medicine, Biology, GeneticsTop concepts (fields/topics) attached by OpenAlex
- Cited by
-
11Total citation count in OpenAlex
- Citations by year (recent)
-
2025: 6, 2024: 4, 2023: 1Per-year citation counts (last 5 years)
- References (count)
-
65Number of works referenced by this work
- Related works (count)
-
10Other works algorithmically related by OpenAlex
Full payload
| id | https://openalex.org/W4367668454 |
|---|---|
| doi | https://doi.org/10.1002/uog.26241 |
| ids.doi | https://doi.org/10.1002/uog.26241 |
| ids.pmid | https://pubmed.ncbi.nlm.nih.gov/37128165 |
| ids.openalex | https://openalex.org/W4367668454 |
| fwci | 3.88359836 |
| mesh[0].qualifier_ui | |
| mesh[0].descriptor_ui | D011247 |
| mesh[0].is_major_topic | False |
| mesh[0].qualifier_name | |
| mesh[0].descriptor_name | Pregnancy |
| mesh[1].qualifier_ui | |
| mesh[1].descriptor_ui | D007231 |
| mesh[1].is_major_topic | False |
| mesh[1].qualifier_name | |
| mesh[1].descriptor_name | Infant, Newborn |
| mesh[2].qualifier_ui | |
| mesh[2].descriptor_ui | D005260 |
| mesh[2].is_major_topic | False |
| mesh[2].qualifier_name | |
| mesh[2].descriptor_name | Female |
| mesh[3].qualifier_ui | |
| mesh[3].descriptor_ui | D006801 |
| mesh[3].is_major_topic | False |
| mesh[3].qualifier_name | |
| mesh[3].descriptor_name | Humans |
| mesh[4].qualifier_ui | Q000453 |
| mesh[4].descriptor_ui | D047928 |
| mesh[4].is_major_topic | True |
| mesh[4].qualifier_name | epidemiology |
| mesh[4].descriptor_name | Premature Birth |
| mesh[5].qualifier_ui | Q000209 |
| mesh[5].descriptor_ui | D047928 |
| mesh[5].is_major_topic | True |
| mesh[5].qualifier_name | etiology |
| mesh[5].descriptor_name | Premature Birth |
| mesh[6].qualifier_ui | Q000009 |
| mesh[6].descriptor_ui | D002585 |
| mesh[6].is_major_topic | False |
| mesh[6].qualifier_name | adverse effects |
| mesh[6].descriptor_name | Cesarean Section |
| mesh[7].qualifier_ui | Q000209 |
| mesh[7].descriptor_ui | D066087 |
| mesh[7].is_major_topic | True |
| mesh[7].qualifier_name | etiology |
| mesh[7].descriptor_name | Perinatal Death |
| mesh[8].qualifier_ui | |
| mesh[8].descriptor_ui | D001946 |
| mesh[8].is_major_topic | True |
| mesh[8].qualifier_name | |
| mesh[8].descriptor_name | Breech Presentation |
| mesh[9].qualifier_ui | |
| mesh[9].descriptor_ui | D012189 |
| mesh[9].is_major_topic | False |
| mesh[9].qualifier_name | |
| mesh[9].descriptor_name | Retrospective Studies |
| mesh[10].qualifier_ui | |
| mesh[10].descriptor_ui | D011247 |
| mesh[10].is_major_topic | False |
| mesh[10].qualifier_name | |
| mesh[10].descriptor_name | Pregnancy |
| mesh[11].qualifier_ui | |
| mesh[11].descriptor_ui | D007231 |
| mesh[11].is_major_topic | False |
| mesh[11].qualifier_name | |
| mesh[11].descriptor_name | Infant, Newborn |
| mesh[12].qualifier_ui | |
| mesh[12].descriptor_ui | D005260 |
| mesh[12].is_major_topic | False |
| mesh[12].qualifier_name | |
| mesh[12].descriptor_name | Female |
| mesh[13].qualifier_ui | |
| mesh[13].descriptor_ui | D006801 |
| mesh[13].is_major_topic | False |
| mesh[13].qualifier_name | |
| mesh[13].descriptor_name | Humans |
| mesh[14].qualifier_ui | Q000453 |
| mesh[14].descriptor_ui | D047928 |
| mesh[14].is_major_topic | True |
| mesh[14].qualifier_name | epidemiology |
| mesh[14].descriptor_name | Premature Birth |
| mesh[15].qualifier_ui | Q000209 |
| mesh[15].descriptor_ui | D047928 |
| mesh[15].is_major_topic | True |
| mesh[15].qualifier_name | etiology |
| mesh[15].descriptor_name | Premature Birth |
| mesh[16].qualifier_ui | Q000009 |
| mesh[16].descriptor_ui | D002585 |
| mesh[16].is_major_topic | False |
| mesh[16].qualifier_name | adverse effects |
| mesh[16].descriptor_name | Cesarean Section |
| mesh[17].qualifier_ui | Q000209 |
| mesh[17].descriptor_ui | D066087 |
| mesh[17].is_major_topic | True |
| mesh[17].qualifier_name | etiology |
| mesh[17].descriptor_name | Perinatal Death |
| mesh[18].qualifier_ui | |
| mesh[18].descriptor_ui | D001946 |
| mesh[18].is_major_topic | True |
| mesh[18].qualifier_name | |
| mesh[18].descriptor_name | Breech Presentation |
| mesh[19].qualifier_ui | |
| mesh[19].descriptor_ui | D012189 |
| mesh[19].is_major_topic | False |
| mesh[19].qualifier_name | |
| mesh[19].descriptor_name | Retrospective Studies |
| mesh[20].qualifier_ui | |
| mesh[20].descriptor_ui | D011247 |
| mesh[20].is_major_topic | False |
| mesh[20].qualifier_name | |
| mesh[20].descriptor_name | Pregnancy |
| mesh[21].qualifier_ui | |
| mesh[21].descriptor_ui | D007231 |
| mesh[21].is_major_topic | False |
| mesh[21].qualifier_name | |
| mesh[21].descriptor_name | Infant, Newborn |
| mesh[22].qualifier_ui | |
| mesh[22].descriptor_ui | D005260 |
| mesh[22].is_major_topic | False |
| mesh[22].qualifier_name | |
| mesh[22].descriptor_name | Female |
| mesh[23].qualifier_ui | |
| mesh[23].descriptor_ui | D006801 |
| mesh[23].is_major_topic | False |
| mesh[23].qualifier_name | |
| mesh[23].descriptor_name | Humans |
| mesh[24].qualifier_ui | Q000453 |
| mesh[24].descriptor_ui | D047928 |
| mesh[24].is_major_topic | True |
| mesh[24].qualifier_name | epidemiology |
| mesh[24].descriptor_name | Premature Birth |
| mesh[25].qualifier_ui | Q000209 |
| mesh[25].descriptor_ui | D047928 |
| mesh[25].is_major_topic | True |
| mesh[25].qualifier_name | etiology |
| mesh[25].descriptor_name | Premature Birth |
| mesh[26].qualifier_ui | Q000009 |
| mesh[26].descriptor_ui | D002585 |
| mesh[26].is_major_topic | False |
| mesh[26].qualifier_name | adverse effects |
| mesh[26].descriptor_name | Cesarean Section |
| mesh[27].qualifier_ui | Q000209 |
| mesh[27].descriptor_ui | D066087 |
| mesh[27].is_major_topic | True |
| mesh[27].qualifier_name | etiology |
| mesh[27].descriptor_name | Perinatal Death |
| mesh[28].qualifier_ui | |
| mesh[28].descriptor_ui | D001946 |
| mesh[28].is_major_topic | True |
| mesh[28].qualifier_name | |
| mesh[28].descriptor_name | Breech Presentation |
| mesh[29].qualifier_ui | |
| mesh[29].descriptor_ui | D012189 |
| mesh[29].is_major_topic | False |
| mesh[29].qualifier_name | |
| mesh[29].descriptor_name | Retrospective Studies |
| mesh[30].qualifier_ui | |
| mesh[30].descriptor_ui | D011247 |
| mesh[30].is_major_topic | False |
| mesh[30].qualifier_name | |
| mesh[30].descriptor_name | Pregnancy |
| mesh[31].qualifier_ui | |
| mesh[31].descriptor_ui | D007231 |
| mesh[31].is_major_topic | False |
| mesh[31].qualifier_name | |
| mesh[31].descriptor_name | Infant, Newborn |
| mesh[32].qualifier_ui | |
| mesh[32].descriptor_ui | D005260 |
| mesh[32].is_major_topic | False |
| mesh[32].qualifier_name | |
| mesh[32].descriptor_name | Female |
| mesh[33].qualifier_ui | |
| mesh[33].descriptor_ui | D006801 |
| mesh[33].is_major_topic | False |
| mesh[33].qualifier_name | |
| mesh[33].descriptor_name | Humans |
| mesh[34].qualifier_ui | Q000453 |
| mesh[34].descriptor_ui | D047928 |
| mesh[34].is_major_topic | True |
| mesh[34].qualifier_name | epidemiology |
| mesh[34].descriptor_name | Premature Birth |
| mesh[35].qualifier_ui | Q000209 |
| mesh[35].descriptor_ui | D047928 |
| mesh[35].is_major_topic | True |
| mesh[35].qualifier_name | etiology |
| mesh[35].descriptor_name | Premature Birth |
| mesh[36].qualifier_ui | Q000009 |
| mesh[36].descriptor_ui | D002585 |
| mesh[36].is_major_topic | False |
| mesh[36].qualifier_name | adverse effects |
| mesh[36].descriptor_name | Cesarean Section |
| mesh[37].qualifier_ui | Q000209 |
| mesh[37].descriptor_ui | D066087 |
| mesh[37].is_major_topic | True |
| mesh[37].qualifier_name | etiology |
| mesh[37].descriptor_name | Perinatal Death |
| mesh[38].qualifier_ui | |
| mesh[38].descriptor_ui | D001946 |
| mesh[38].is_major_topic | True |
| mesh[38].qualifier_name | |
| mesh[38].descriptor_name | Breech Presentation |
| mesh[39].qualifier_ui | |
| mesh[39].descriptor_ui | D012189 |
| mesh[39].is_major_topic | False |
| mesh[39].qualifier_name | |
| mesh[39].descriptor_name | Retrospective Studies |
| type | review |
| title | Effect of mode of delivery on perinatal outcome in severe preterm birth: systematic review and meta‐analysis |
| biblio.issue | 4 |
| biblio.volume | 62 |
| biblio.last_page | 485 |
| biblio.first_page | 471 |
| topics[0].id | https://openalex.org/T11290 |
| topics[0].field.id | https://openalex.org/fields/27 |
| topics[0].field.display_name | Medicine |
| topics[0].score | 0.9994000196456909 |
| topics[0].domain.id | https://openalex.org/domains/4 |
| topics[0].domain.display_name | Health Sciences |
| topics[0].subfield.id | https://openalex.org/subfields/2713 |
| topics[0].subfield.display_name | Epidemiology |
| topics[0].display_name | Preterm Birth and Chorioamnionitis |
| topics[1].id | https://openalex.org/T10453 |
| topics[1].field.id | https://openalex.org/fields/27 |
| topics[1].field.display_name | Medicine |
| topics[1].score | 0.9993000030517578 |
| topics[1].domain.id | https://openalex.org/domains/4 |
| topics[1].domain.display_name | Health Sciences |
| topics[1].subfield.id | https://openalex.org/subfields/2729 |
| topics[1].subfield.display_name | Obstetrics and Gynecology |
| topics[1].display_name | Maternal and Perinatal Health Interventions |
| topics[2].id | https://openalex.org/T11732 |
| topics[2].field.id | https://openalex.org/fields/27 |
| topics[2].field.display_name | Medicine |
| topics[2].score | 0.9991999864578247 |
| topics[2].domain.id | https://openalex.org/domains/4 |
| topics[2].domain.display_name | Health Sciences |
| topics[2].subfield.id | https://openalex.org/subfields/2735 |
| topics[2].subfield.display_name | Pediatrics, Perinatology and Child Health |
| topics[2].display_name | Assisted Reproductive Technology and Twin Pregnancy |
| is_xpac | False |
| apc_list.value | 4480 |
| apc_list.currency | USD |
| apc_list.value_usd | 4480 |
| apc_paid.value | 4480 |
| apc_paid.currency | USD |
| apc_paid.value_usd | 4480 |
| concepts[0].id | https://openalex.org/C71924100 |
| concepts[0].level | 0 |
| concepts[0].score | 0.9365123510360718 |
| concepts[0].wikidata | https://www.wikidata.org/wiki/Q11190 |
| concepts[0].display_name | Medicine |
| concepts[1].id | https://openalex.org/C95190672 |
| concepts[1].level | 2 |
| concepts[1].score | 0.6638766527175903 |
| concepts[1].wikidata | https://www.wikidata.org/wiki/Q815382 |
| concepts[1].display_name | Meta-analysis |
| concepts[2].id | https://openalex.org/C156957248 |
| concepts[2].level | 2 |
| concepts[2].score | 0.6007006168365479 |
| concepts[2].wikidata | https://www.wikidata.org/wiki/Q1862216 |
| concepts[2].display_name | Odds ratio |
| concepts[3].id | https://openalex.org/C168563851 |
| concepts[3].level | 2 |
| concepts[3].score | 0.5611903667449951 |
| concepts[3].wikidata | https://www.wikidata.org/wiki/Q1436668 |
| concepts[3].display_name | Randomized controlled trial |
| concepts[4].id | https://openalex.org/C187212893 |
| concepts[4].level | 1 |
| concepts[4].score | 0.5083131194114685 |
| concepts[4].wikidata | https://www.wikidata.org/wiki/Q123028 |
| concepts[4].display_name | Pediatrics |
| concepts[5].id | https://openalex.org/C131872663 |
| concepts[5].level | 1 |
| concepts[5].score | 0.490697979927063 |
| concepts[5].wikidata | https://www.wikidata.org/wiki/Q5284418 |
| concepts[5].display_name | Obstetrics |
| concepts[6].id | https://openalex.org/C2776478404 |
| concepts[6].level | 3 |
| concepts[6].score | 0.44873765110969543 |
| concepts[6].wikidata | https://www.wikidata.org/wiki/Q1105187 |
| concepts[6].display_name | Cochrane Library |
| concepts[7].id | https://openalex.org/C2778408130 |
| concepts[7].level | 3 |
| concepts[7].score | 0.43291425704956055 |
| concepts[7].wikidata | https://www.wikidata.org/wiki/Q6679974 |
| concepts[7].display_name | Vaginal delivery |
| concepts[8].id | https://openalex.org/C2779234561 |
| concepts[8].level | 2 |
| concepts[8].score | 0.34237271547317505 |
| concepts[8].wikidata | https://www.wikidata.org/wiki/Q11995 |
| concepts[8].display_name | Pregnancy |
| concepts[9].id | https://openalex.org/C141071460 |
| concepts[9].level | 1 |
| concepts[9].score | 0.14723443984985352 |
| concepts[9].wikidata | https://www.wikidata.org/wiki/Q40821 |
| concepts[9].display_name | Surgery |
| concepts[10].id | https://openalex.org/C126322002 |
| concepts[10].level | 1 |
| concepts[10].score | 0.10552683472633362 |
| concepts[10].wikidata | https://www.wikidata.org/wiki/Q11180 |
| concepts[10].display_name | Internal medicine |
| concepts[11].id | https://openalex.org/C86803240 |
| concepts[11].level | 0 |
| concepts[11].score | 0.0 |
| concepts[11].wikidata | https://www.wikidata.org/wiki/Q420 |
| concepts[11].display_name | Biology |
| concepts[12].id | https://openalex.org/C54355233 |
| concepts[12].level | 1 |
| concepts[12].score | 0.0 |
| concepts[12].wikidata | https://www.wikidata.org/wiki/Q7162 |
| concepts[12].display_name | Genetics |
| keywords[0].id | https://openalex.org/keywords/medicine |
| keywords[0].score | 0.9365123510360718 |
| keywords[0].display_name | Medicine |
| keywords[1].id | https://openalex.org/keywords/meta-analysis |
| keywords[1].score | 0.6638766527175903 |
| keywords[1].display_name | Meta-analysis |
| keywords[2].id | https://openalex.org/keywords/odds-ratio |
| keywords[2].score | 0.6007006168365479 |
| keywords[2].display_name | Odds ratio |
| keywords[3].id | https://openalex.org/keywords/randomized-controlled-trial |
| keywords[3].score | 0.5611903667449951 |
| keywords[3].display_name | Randomized controlled trial |
| keywords[4].id | https://openalex.org/keywords/pediatrics |
| keywords[4].score | 0.5083131194114685 |
| keywords[4].display_name | Pediatrics |
| keywords[5].id | https://openalex.org/keywords/obstetrics |
| keywords[5].score | 0.490697979927063 |
| keywords[5].display_name | Obstetrics |
| keywords[6].id | https://openalex.org/keywords/cochrane-library |
| keywords[6].score | 0.44873765110969543 |
| keywords[6].display_name | Cochrane Library |
| keywords[7].id | https://openalex.org/keywords/vaginal-delivery |
| keywords[7].score | 0.43291425704956055 |
| keywords[7].display_name | Vaginal delivery |
| keywords[8].id | https://openalex.org/keywords/pregnancy |
| keywords[8].score | 0.34237271547317505 |
| keywords[8].display_name | Pregnancy |
| keywords[9].id | https://openalex.org/keywords/surgery |
| keywords[9].score | 0.14723443984985352 |
| keywords[9].display_name | Surgery |
| keywords[10].id | https://openalex.org/keywords/internal-medicine |
| keywords[10].score | 0.10552683472633362 |
| keywords[10].display_name | Internal medicine |
| language | en |
| locations[0].id | doi:10.1002/uog.26241 |
| locations[0].is_oa | True |
| locations[0].source.id | https://openalex.org/S22881060 |
| locations[0].source.issn | 0960-7692, 1469-0705 |
| locations[0].source.type | journal |
| locations[0].source.is_oa | False |
| locations[0].source.issn_l | 0960-7692 |
| locations[0].source.is_core | True |
| locations[0].source.is_in_doaj | False |
| locations[0].source.display_name | Ultrasound in Obstetrics and Gynecology |
| locations[0].source.host_organization | https://openalex.org/P4310320595 |
| locations[0].source.host_organization_name | Wiley |
| locations[0].source.host_organization_lineage | https://openalex.org/P4310320595 |
| locations[0].source.host_organization_lineage_names | Wiley |
| locations[0].license | |
| locations[0].pdf_url | https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/uog.26241 |
| locations[0].version | publishedVersion |
| locations[0].raw_type | journal-article |
| locations[0].license_id | |
| locations[0].is_accepted | True |
| locations[0].is_published | True |
| locations[0].raw_source_name | Ultrasound in Obstetrics & Gynecology |
| locations[0].landing_page_url | https://doi.org/10.1002/uog.26241 |
| locations[1].id | pmid:37128165 |
| locations[1].is_oa | False |
| locations[1].source.id | https://openalex.org/S4306525036 |
| locations[1].source.issn | |
| locations[1].source.type | repository |
| locations[1].source.is_oa | False |
| locations[1].source.issn_l | |
| locations[1].source.is_core | False |
| locations[1].source.is_in_doaj | False |
| locations[1].source.display_name | PubMed |
| locations[1].source.host_organization | https://openalex.org/I1299303238 |
| locations[1].source.host_organization_name | National Institutes of Health |
| locations[1].source.host_organization_lineage | https://openalex.org/I1299303238 |
| locations[1].license | |
| locations[1].pdf_url | |
| locations[1].version | publishedVersion |
| locations[1].raw_type | |
| locations[1].license_id | |
| locations[1].is_accepted | True |
| locations[1].is_published | True |
| locations[1].raw_source_name | Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology |
| locations[1].landing_page_url | https://pubmed.ncbi.nlm.nih.gov/37128165 |
| indexed_in | crossref, pubmed |
| authorships[0].author.id | https://openalex.org/A5053428854 |
| authorships[0].author.orcid | https://orcid.org/0000-0001-8554-571X |
| authorships[0].author.display_name | Eleftheria Demertzidou |
| authorships[0].countries | GR |
| authorships[0].affiliations[0].institution_ids | https://openalex.org/I21370196 |
| authorships[0].affiliations[0].raw_affiliation_string | Second Department of Obstetrics and Gynecology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece |
| authorships[0].institutions[0].id | https://openalex.org/I21370196 |
| authorships[0].institutions[0].ror | https://ror.org/02j61yw88 |
| authorships[0].institutions[0].type | education |
| authorships[0].institutions[0].lineage | https://openalex.org/I21370196 |
| authorships[0].institutions[0].country_code | GR |
| authorships[0].institutions[0].display_name | Aristotle University of Thessaloniki |
| authorships[0].author_position | first |
| authorships[0].raw_author_name | E. Demertzidou |
| authorships[0].is_corresponding | False |
| authorships[0].raw_affiliation_strings | Second Department of Obstetrics and Gynecology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece |
| authorships[1].author.id | https://openalex.org/A5021656867 |
| authorships[1].author.orcid | https://orcid.org/0000-0002-5895-6887 |
| authorships[1].author.display_name | Christos Chatzakis |
| authorships[1].countries | GR |
| authorships[1].affiliations[0].institution_ids | https://openalex.org/I21370196 |
| authorships[1].affiliations[0].raw_affiliation_string | Second Department of Obstetrics and Gynecology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece |
| authorships[1].institutions[0].id | https://openalex.org/I21370196 |
| authorships[1].institutions[0].ror | https://ror.org/02j61yw88 |
| authorships[1].institutions[0].type | education |
| authorships[1].institutions[0].lineage | https://openalex.org/I21370196 |
| authorships[1].institutions[0].country_code | GR |
| authorships[1].institutions[0].display_name | Aristotle University of Thessaloniki |
| authorships[1].author_position | middle |
| authorships[1].raw_author_name | C. Chatzakis |
| authorships[1].is_corresponding | False |
| authorships[1].raw_affiliation_strings | Second Department of Obstetrics and Gynecology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece |
| authorships[2].author.id | https://openalex.org/A5088473542 |
| authorships[2].author.orcid | https://orcid.org/0000-0001-8097-366X |
| authorships[2].author.display_name | Paolo Ivo Cavoretto |
| authorships[2].countries | IT |
| authorships[2].affiliations[0].institution_ids | https://openalex.org/I154387261, https://openalex.org/I4210153126 |
| authorships[2].affiliations[0].raw_affiliation_string | Department of Obstetrics and Gynecology, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Raffaele Hospital, Vita-Salute San Raffaele University, Milan, Italy |
| authorships[2].institutions[0].id | https://openalex.org/I4210153126 |
| authorships[2].institutions[0].ror | https://ror.org/04tfzc498 |
| authorships[2].institutions[0].type | healthcare |
| authorships[2].institutions[0].lineage | https://openalex.org/I4210153126 |
| authorships[2].institutions[0].country_code | IT |
| authorships[2].institutions[0].display_name | Istituti di Ricovero e Cura a Carattere Scientifico |
| authorships[2].institutions[1].id | https://openalex.org/I154387261 |
| authorships[2].institutions[1].ror | https://ror.org/01gmqr298 |
| authorships[2].institutions[1].type | education |
| authorships[2].institutions[1].lineage | https://openalex.org/I154387261 |
| authorships[2].institutions[1].country_code | IT |
| authorships[2].institutions[1].display_name | Vita-Salute San Raffaele University |
| authorships[2].author_position | middle |
| authorships[2].raw_author_name | P. Cavoretto |
| authorships[2].is_corresponding | False |
| authorships[2].raw_affiliation_strings | Department of Obstetrics and Gynecology, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Raffaele Hospital, Vita-Salute San Raffaele University, Milan, Italy |
| authorships[3].author.id | https://openalex.org/A5039645390 |
| authorships[3].author.orcid | |
| authorships[3].author.display_name | K. Sarafidis |
| authorships[3].countries | GR |
| authorships[3].affiliations[0].institution_ids | https://openalex.org/I21370196 |
| authorships[3].affiliations[0].raw_affiliation_string | First Department of Neonatology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece |
| authorships[3].institutions[0].id | https://openalex.org/I21370196 |
| authorships[3].institutions[0].ror | https://ror.org/02j61yw88 |
| authorships[3].institutions[0].type | education |
| authorships[3].institutions[0].lineage | https://openalex.org/I21370196 |
| authorships[3].institutions[0].country_code | GR |
| authorships[3].institutions[0].display_name | Aristotle University of Thessaloniki |
| authorships[3].author_position | middle |
| authorships[3].raw_author_name | K. Sarafidis |
| authorships[3].is_corresponding | False |
| authorships[3].raw_affiliation_strings | First Department of Neonatology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece |
| authorships[4].author.id | https://openalex.org/A5027874206 |
| authorships[4].author.orcid | https://orcid.org/0000-0003-4967-2505 |
| authorships[4].author.display_name | Makarios Eleftheriades |
| authorships[4].countries | GR |
| authorships[4].affiliations[0].institution_ids | https://openalex.org/I200777214 |
| authorships[4].affiliations[0].raw_affiliation_string | Second Department of Obstetrics and Gynecology, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece |
| authorships[4].institutions[0].id | https://openalex.org/I200777214 |
| authorships[4].institutions[0].ror | https://ror.org/04gnjpq42 |
| authorships[4].institutions[0].type | education |
| authorships[4].institutions[0].lineage | https://openalex.org/I200777214 |
| authorships[4].institutions[0].country_code | GR |
| authorships[4].institutions[0].display_name | National and Kapodistrian University of Athens |
| authorships[4].author_position | middle |
| authorships[4].raw_author_name | M. Eleftheriades |
| authorships[4].is_corresponding | False |
| authorships[4].raw_affiliation_strings | Second Department of Obstetrics and Gynecology, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece |
| authorships[5].author.id | https://openalex.org/A5059982183 |
| authorships[5].author.orcid | https://orcid.org/0000-0001-9296-3688 |
| authorships[5].author.display_name | Angeliki Gerede |
| authorships[5].countries | GR |
| authorships[5].affiliations[0].institution_ids | https://openalex.org/I4210161335 |
| authorships[5].affiliations[0].raw_affiliation_string | Department of Obstetrics and Gynecology, University of Thrace, Alexandroupolis, Greece |
| authorships[5].institutions[0].id | https://openalex.org/I4210161335 |
| authorships[5].institutions[0].ror | https://ror.org/04zkctn64 |
| authorships[5].institutions[0].type | healthcare |
| authorships[5].institutions[0].lineage | https://openalex.org/I4210161335 |
| authorships[5].institutions[0].country_code | GR |
| authorships[5].institutions[0].display_name | University Hospital of Alexandroupolis |
| authorships[5].author_position | middle |
| authorships[5].raw_author_name | A. Gerede |
| authorships[5].is_corresponding | False |
| authorships[5].raw_affiliation_strings | Department of Obstetrics and Gynecology, University of Thrace, Alexandroupolis, Greece |
| authorships[6].author.id | https://openalex.org/A5039952072 |
| authorships[6].author.orcid | |
| authorships[6].author.display_name | Kostantinos Dinas |
| authorships[6].countries | GR |
| authorships[6].affiliations[0].institution_ids | https://openalex.org/I21370196 |
| authorships[6].affiliations[0].raw_affiliation_string | Second Department of Obstetrics and Gynecology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece |
| authorships[6].institutions[0].id | https://openalex.org/I21370196 |
| authorships[6].institutions[0].ror | https://ror.org/02j61yw88 |
| authorships[6].institutions[0].type | education |
| authorships[6].institutions[0].lineage | https://openalex.org/I21370196 |
| authorships[6].institutions[0].country_code | GR |
| authorships[6].institutions[0].display_name | Aristotle University of Thessaloniki |
| authorships[6].author_position | middle |
| authorships[6].raw_author_name | K. Dinas |
| authorships[6].is_corresponding | False |
| authorships[6].raw_affiliation_strings | Second Department of Obstetrics and Gynecology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece |
| authorships[7].author.id | https://openalex.org/A5086300098 |
| authorships[7].author.orcid | https://orcid.org/0000-0003-0876-5596 |
| authorships[7].author.display_name | Alexandros Sotiriadis |
| authorships[7].countries | GR |
| authorships[7].affiliations[0].institution_ids | https://openalex.org/I21370196 |
| authorships[7].affiliations[0].raw_affiliation_string | Second Department of Obstetrics and Gynecology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece |
| authorships[7].institutions[0].id | https://openalex.org/I21370196 |
| authorships[7].institutions[0].ror | https://ror.org/02j61yw88 |
| authorships[7].institutions[0].type | education |
| authorships[7].institutions[0].lineage | https://openalex.org/I21370196 |
| authorships[7].institutions[0].country_code | GR |
| authorships[7].institutions[0].display_name | Aristotle University of Thessaloniki |
| authorships[7].author_position | last |
| authorships[7].raw_author_name | A. Sotiriadis |
| authorships[7].is_corresponding | True |
| authorships[7].raw_affiliation_strings | Second Department of Obstetrics and Gynecology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece |
| has_content.pdf | True |
| has_content.grobid_xml | True |
| is_paratext | False |
| open_access.is_oa | True |
| open_access.oa_url | https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/uog.26241 |
| open_access.oa_status | hybrid |
| open_access.any_repository_has_fulltext | False |
| created_date | 2025-10-10T00:00:00 |
| display_name | Effect of mode of delivery on perinatal outcome in severe preterm birth: systematic review and meta‐analysis |
| has_fulltext | True |
| is_retracted | False |
| updated_date | 2025-11-06T03:46:38.306776 |
| primary_topic.id | https://openalex.org/T11290 |
| primary_topic.field.id | https://openalex.org/fields/27 |
| primary_topic.field.display_name | Medicine |
| primary_topic.score | 0.9994000196456909 |
| primary_topic.domain.id | https://openalex.org/domains/4 |
| primary_topic.domain.display_name | Health Sciences |
| primary_topic.subfield.id | https://openalex.org/subfields/2713 |
| primary_topic.subfield.display_name | Epidemiology |
| primary_topic.display_name | Preterm Birth and Chorioamnionitis |
| related_works | https://openalex.org/W2355769538, https://openalex.org/W2081816252, https://openalex.org/W2015216653, https://openalex.org/W2373885168, https://openalex.org/W2112436308, https://openalex.org/W2286371484, https://openalex.org/W4292341104, https://openalex.org/W2189666756, https://openalex.org/W4384157362, https://openalex.org/W2073229916 |
| cited_by_count | 11 |
| counts_by_year[0].year | 2025 |
| counts_by_year[0].cited_by_count | 6 |
| counts_by_year[1].year | 2024 |
| counts_by_year[1].cited_by_count | 4 |
| counts_by_year[2].year | 2023 |
| counts_by_year[2].cited_by_count | 1 |
| locations_count | 2 |
| best_oa_location.id | doi:10.1002/uog.26241 |
| best_oa_location.is_oa | True |
| best_oa_location.source.id | https://openalex.org/S22881060 |
| best_oa_location.source.issn | 0960-7692, 1469-0705 |
| best_oa_location.source.type | journal |
| best_oa_location.source.is_oa | False |
| best_oa_location.source.issn_l | 0960-7692 |
| best_oa_location.source.is_core | True |
| best_oa_location.source.is_in_doaj | False |
| best_oa_location.source.display_name | Ultrasound in Obstetrics and Gynecology |
| best_oa_location.source.host_organization | https://openalex.org/P4310320595 |
| best_oa_location.source.host_organization_name | Wiley |
| best_oa_location.source.host_organization_lineage | https://openalex.org/P4310320595 |
| best_oa_location.source.host_organization_lineage_names | Wiley |
| best_oa_location.license | |
| best_oa_location.pdf_url | https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/uog.26241 |
| best_oa_location.version | publishedVersion |
| best_oa_location.raw_type | journal-article |
| best_oa_location.license_id | |
| best_oa_location.is_accepted | True |
| best_oa_location.is_published | True |
| best_oa_location.raw_source_name | Ultrasound in Obstetrics & Gynecology |
| best_oa_location.landing_page_url | https://doi.org/10.1002/uog.26241 |
| primary_location.id | doi:10.1002/uog.26241 |
| primary_location.is_oa | True |
| primary_location.source.id | https://openalex.org/S22881060 |
| primary_location.source.issn | 0960-7692, 1469-0705 |
| primary_location.source.type | journal |
| primary_location.source.is_oa | False |
| primary_location.source.issn_l | 0960-7692 |
| primary_location.source.is_core | True |
| primary_location.source.is_in_doaj | False |
| primary_location.source.display_name | Ultrasound in Obstetrics and Gynecology |
| primary_location.source.host_organization | https://openalex.org/P4310320595 |
| primary_location.source.host_organization_name | Wiley |
| primary_location.source.host_organization_lineage | https://openalex.org/P4310320595 |
| primary_location.source.host_organization_lineage_names | Wiley |
| primary_location.license | |
| primary_location.pdf_url | https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/uog.26241 |
| primary_location.version | publishedVersion |
| primary_location.raw_type | journal-article |
| primary_location.license_id | |
| primary_location.is_accepted | True |
| primary_location.is_published | True |
| primary_location.raw_source_name | Ultrasound in Obstetrics & Gynecology |
| primary_location.landing_page_url | https://doi.org/10.1002/uog.26241 |
| publication_date | 2023-05-02 |
| publication_year | 2023 |
| referenced_works | https://openalex.org/W2750810476, https://openalex.org/W2166266395, https://openalex.org/W2150682993, https://openalex.org/W2405656517, https://openalex.org/W2744638253, https://openalex.org/W2948864170, https://openalex.org/W3186842717, https://openalex.org/W4226142622, https://openalex.org/W2396061820, https://openalex.org/W2083599968, https://openalex.org/W1903681601, https://openalex.org/W2105220907, https://openalex.org/W2904242125, https://openalex.org/W2002519037, https://openalex.org/W2970684805, https://openalex.org/W2531269403, https://openalex.org/W3023552461, https://openalex.org/W2135400982, https://openalex.org/W2126930838, https://openalex.org/W2995831605, https://openalex.org/W2497087671, https://openalex.org/W1995895365, https://openalex.org/W1963924066, https://openalex.org/W2029699858, https://openalex.org/W2790030116, https://openalex.org/W2101358033, https://openalex.org/W2063733805, https://openalex.org/W2601053796, https://openalex.org/W2078673411, https://openalex.org/W1446323077, https://openalex.org/W2941730262, https://openalex.org/W1997490875, https://openalex.org/W4229065491, https://openalex.org/W3036007240, https://openalex.org/W2014052256, https://openalex.org/W2411034963, https://openalex.org/W1820971282, https://openalex.org/W2941302579, https://openalex.org/W2130119229, https://openalex.org/W2883856095, https://openalex.org/W2129646120, https://openalex.org/W2117681815, https://openalex.org/W3206485294, https://openalex.org/W2911169166, https://openalex.org/W1980988343, https://openalex.org/W2783832554, https://openalex.org/W3186058453, https://openalex.org/W2164100388, https://openalex.org/W2009526473, https://openalex.org/W2182622370, https://openalex.org/W2010101647, https://openalex.org/W6652808411, https://openalex.org/W2536322979, https://openalex.org/W2905057925, https://openalex.org/W3164647996, https://openalex.org/W3201547264, https://openalex.org/W2146138218, https://openalex.org/W2141470156, https://openalex.org/W2998455496, https://openalex.org/W2050303276, https://openalex.org/W6663356328, https://openalex.org/W2754491730, https://openalex.org/W2151807392, https://openalex.org/W4320300885, https://openalex.org/W2323164685 |
| referenced_works_count | 65 |
| abstract_inverted_index.( | 218, 242, 277, 314, 349 |
| abstract_inverted_index.2 | 228, 252, 287, 324, 359 |
| abstract_inverted_index.= | 220, 229, 244, 253, 279, 288, 316, 325, 351, 360 |
| abstract_inverted_index.A | 172 |
| abstract_inverted_index.I | 227, 251, 286, 323, 358 |
| abstract_inverted_index.n | 219, 243, 278, 315, 350 |
| abstract_inverted_index.24 | 336 |
| abstract_inverted_index.27 | 175 |
| abstract_inverted_index.28 | 93, 156, 160, 200, 275, 299 |
| abstract_inverted_index.32 | 20, 162, 301, 338 |
| abstract_inverted_index.In | 331 |
| abstract_inverted_index.No | 366 |
| abstract_inverted_index.To | 2 |
| abstract_inverted_index.an | 401 |
| abstract_inverted_index.as | 88 |
| abstract_inverted_index.at | 169, 380 |
| abstract_inverted_index.by | 431 |
| abstract_inverted_index.in | 51, 79, 90, 183, 377, 394, 409, 426, 444 |
| abstract_inverted_index.is | 398 |
| abstract_inverted_index.no | 413 |
| abstract_inverted_index.of | 9, 11, 16, 29, 95, 117, 122, 174, 190, 208, 211, 216, 234, 237, 257, 261, 292, 308, 329, 345, 364, 371, 373, 404, 439, 442 |
| abstract_inverted_index.on | 6, 13, 193, 369, 437 |
| abstract_inverted_index.or | 55, 65, 71 |
| abstract_inverted_index.to | 47, 99, 113, 130, 166, 263, 347 |
| abstract_inverted_index.© | 421 |
| abstract_inverted_index.(22 | 178 |
| abstract_inverted_index.(OR | 222, 246, 281, 318, 353 |
| abstract_inverted_index.0%, | 326, 361 |
| abstract_inverted_index.887 | 179 |
| abstract_inverted_index.95% | 137 |
| abstract_inverted_index.CI, | 225, 249, 284, 321, 356 |
| abstract_inverted_index.CIs | 138 |
| abstract_inverted_index.Ltd | 436 |
| abstract_inverted_index.The | 108, 119, 259, 423 |
| abstract_inverted_index.all | 189 |
| abstract_inverted_index.and | 36, 97, 141, 161, 164, 187, 236, 300, 312, 337, 388, 406, 446 |
| abstract_inverted_index.any | 214, 381 |
| abstract_inverted_index.for | 77, 124, 146, 153, 418 |
| abstract_inverted_index.low | 232, 290 |
| abstract_inverted_index.the | 4, 7, 33, 44, 80, 91, 115, 125, 184, 206, 306, 343 |
| abstract_inverted_index.via | 72 |
| abstract_inverted_index.was | 111, 127, 151, 375, 416 |
| abstract_inverted_index.(95% | 224, 248, 283, 320, 355 |
| abstract_inverted_index.0.28 | 354 |
| abstract_inverted_index.0.36 | 282 |
| abstract_inverted_index.1.87 | 223 |
| abstract_inverted_index.2000 | 46 |
| abstract_inverted_index.2023 | 422 |
| abstract_inverted_index.21%, | 254, 289 |
| abstract_inverted_index.3.06 | 319 |
| abstract_inverted_index.3.55 | 247 |
| abstract_inverted_index.646) | 280 |
| abstract_inverted_index.65%, | 230 |
| abstract_inverted_index.733) | 245 |
| abstract_inverted_index.John | 432 |
| abstract_inverted_index.Sons | 435 |
| abstract_inverted_index.This | 385 |
| abstract_inverted_index.age, | 96 |
| abstract_inverted_index.age. | 383 |
| abstract_inverted_index.born | 18, 198, 297, 334 |
| abstract_inverted_index.data | 147 |
| abstract_inverted_index.days | 94 |
| abstract_inverted_index.from | 43 |
| abstract_inverted_index.gray | 37 |
| abstract_inverted_index.high | 327 |
| abstract_inverted_index.mode | 10, 372 |
| abstract_inverted_index.odds | 133, 260, 307, 344 |
| abstract_inverted_index.risk | 116, 207, 403 |
| abstract_inverted_index.that | 58, 391 |
| abstract_inverted_index.tool | 110 |
| abstract_inverted_index.type | 215 |
| abstract_inverted_index.used | 112, 145 |
| abstract_inverted_index.very | 231 |
| abstract_inverted_index.were | 40, 75, 84, 103, 139, 144, 181, 265 |
| abstract_inverted_index.with | 136, 213, 239, 270, 400 |
| abstract_inverted_index.year | 45 |
| abstract_inverted_index.& | 428, 434 |
| abstract_inverted_index.(ORs) | 135 |
| abstract_inverted_index.1030) | 352 |
| abstract_inverted_index.1496) | 221 |
| abstract_inverted_index.1581) | 317 |
| abstract_inverted_index.Among | 196, 294 |
| abstract_inverted_index.Wiley | 433 |
| abstract_inverted_index.among | 268 |
| abstract_inverted_index.bias. | 118 |
| abstract_inverted_index.birth | 397 |
| abstract_inverted_index.care. | 53 |
| abstract_inverted_index.cases | 197 |
| abstract_inverted_index.death | 89, 210, 310, 408 |
| abstract_inverted_index.fetal | 167 |
| abstract_inverted_index.first | 92 |
| abstract_inverted_index.major | 66 |
| abstract_inverted_index.other | 104 |
| abstract_inverted_index.total | 173 |
| abstract_inverted_index.weeks | 163, 276 |
| abstract_inverted_index.which | 191 |
| abstract_inverted_index.while | 412 |
| abstract_inverted_index.GRADE. | 131 |
| abstract_inverted_index.Trials | 31 |
| abstract_inverted_index.assess | 114 |
| abstract_inverted_index.before | 19, 155, 199, 274 |
| abstract_inverted_index.behalf | 438 |
| abstract_inverted_index.breech | 240, 271, 295, 410 |
| abstract_inverted_index.death, | 86 |
| abstract_inverted_index.defect | 68 |
| abstract_inverted_index.effect | 8, 368 |
| abstract_inverted_index.models | 143 |
| abstract_inverted_index.ratios | 134 |
| abstract_inverted_index.review | 3, 186, 387 |
| abstract_inverted_index.severe | 395 |
| abstract_inverted_index.weeks' | 21 |
| abstract_inverted_index.weeks, | 157, 201, 302, 339 |
| abstract_inverted_index.Central | 27 |
| abstract_inverted_index.Methods | 23 |
| abstract_inverted_index.Primary | 82 |
| abstract_inverted_index.Results | 171 |
| abstract_inverted_index.Scopus, | 25 |
| abstract_inverted_index.Society | 441 |
| abstract_inverted_index.Summary | 132 |
| abstract_inverted_index.adverse | 105 |
| abstract_inverted_index.between | 159, 298, 335 |
| abstract_inverted_index.defined | 87 |
| abstract_inverted_index.events. | 107 |
| abstract_inverted_index.fetuses | 17, 61, 212, 238, 269, 296, 333, 379 |
| abstract_inverted_index.outcome | 15 |
| abstract_inverted_index.overall | 120 |
| abstract_inverted_index.preterm | 396 |
| abstract_inverted_index.quality | 121, 233, 256, 291, 328, 363 |
| abstract_inverted_index.reflect | 48 |
| abstract_inverted_index.section | 74 |
| abstract_inverted_index.sources | 39 |
| abstract_inverted_index.studies | 57, 177 |
| abstract_inverted_index.vaginal | 202, 303, 340, 392 |
| abstract_inverted_index.without | 62 |
| abstract_inverted_index.ABSTRACT | 0 |
| abstract_inverted_index.Authors. | 424 |
| abstract_inverted_index.Cesarean | 73 |
| abstract_inverted_index.Cochrane | 26 |
| abstract_inverted_index.MEDLINE, | 24 |
| abstract_inverted_index.Register | 28 |
| abstract_inverted_index.Subgroup | 149 |
| abstract_inverted_index.analysis | 150 |
| abstract_inverted_index.assessed | 128 |
| abstract_inverted_index.cephalic | 378, 419 |
| abstract_inverted_index.delivery | 12, 154, 158, 203, 304, 341, 374, 393 |
| abstract_inverted_index.eligible | 76 |
| abstract_inverted_index.evidence | 5, 123 |
| abstract_inverted_index.fetuses, | 411 |
| abstract_inverted_index.fetuses. | 420 |
| abstract_inverted_index.included | 59, 182 |
| abstract_inverted_index.moderate | 255, 362 |
| abstract_inverted_index.neonatal | 85, 209, 405 |
| abstract_inverted_index.observed | 376, 417 |
| abstract_inverted_index.outcomes | 83, 102, 126 |
| abstract_inverted_index.practice | 50 |
| abstract_inverted_index.registry | 35 |
| abstract_inverted_index.reported | 192 |
| abstract_inverted_index.starting | 42 |
| abstract_inverted_index.suggests | 390 |
| abstract_inverted_index.survival | 98, 262, 346 |
| abstract_inverted_index.Objective | 1 |
| abstract_inverted_index.Secondary | 101 |
| abstract_inverted_index.according | 129, 165 |
| abstract_inverted_index.analysis. | 81 |
| abstract_inverted_index.decreased | 267, 342 |
| abstract_inverted_index.delivered | 69, 273 |
| abstract_inverted_index.delivery. | 170 |
| abstract_inverted_index.discharge | 264, 348 |
| abstract_inverted_index.evidence) | 235 |
| abstract_inverted_index.inclusion | 78 |
| abstract_inverted_index.increased | 205, 305, 402 |
| abstract_inverted_index.mortality | 370 |
| abstract_inverted_index.neonatal) | 313 |
| abstract_inverted_index.neonates) | 180 |
| abstract_inverted_index.performed | 152 |
| abstract_inverted_index.perinatal | 14, 52, 106, 309, 407 |
| abstract_inverted_index.published | 430 |
| abstract_inverted_index.searched, | 41 |
| abstract_inverted_index.singleton | 60, 194 |
| abstract_inverted_index.vaginally | 70 |
| abstract_inverted_index.(CENTRAL), | 32 |
| abstract_inverted_index.Controlled | 30 |
| abstract_inverted_index.Gynecology | 429 |
| abstract_inverted_index.Obstetrics | 427, 445 |
| abstract_inverted_index.ROBINS‐I | 109 |
| abstract_inverted_index.Ultrasound | 425, 443 |
| abstract_inverted_index.associated | 399 |
| abstract_inverted_index.congenital | 67 |
| abstract_inverted_index.discharge. | 100 |
| abstract_inverted_index.evidence). | 258, 293, 330, 365 |
| abstract_inverted_index.gestation. | 22 |
| abstract_inverted_index.literature | 38 |
| abstract_inverted_index.randomized | 56 |
| abstract_inverted_index.synthesis. | 148 |
| abstract_inverted_index.systematic | 185, 386 |
| abstract_inverted_index.Conclusions | 384 |
| abstract_inverted_index.Gynecology. | 447 |
| abstract_inverted_index.abnormality | 64 |
| abstract_inverted_index.association | 415 |
| abstract_inverted_index.calculated, | 140 |
| abstract_inverted_index.chromosomal | 63 |
| abstract_inverted_index.gestational | 382 |
| abstract_inverted_index.significant | 367, 414 |
| abstract_inverted_index.(intrapartum | 311 |
| abstract_inverted_index.contemporary | 49 |
| abstract_inverted_index.pregnancies. | 195 |
| abstract_inverted_index.presentation | 168, 217, 241, 272 |
| abstract_inverted_index.0.19–0.40); | 357 |
| abstract_inverted_index.0.24–0.54); | 285 |
| abstract_inverted_index.1.05–3.35); | 226 |
| abstract_inverted_index.1.47–6.35); | 322 |
| abstract_inverted_index.2.42–5.21); | 250 |
| abstract_inverted_index.International | 440 |
| abstract_inverted_index.retrospective | 176 |
| abstract_inverted_index.significantly | 204, 266 |
| abstract_inverted_index.non‐cephalic | 332 |
| abstract_inverted_index.meta‐analysis | 389 |
| abstract_inverted_index.Non‐randomized | 54 |
| abstract_inverted_index.meta‐analysis, | 188 |
| abstract_inverted_index.random‐effects | 142 |
| abstract_inverted_index.ClinicalTrials.gov | 34 |
| cited_by_percentile_year.max | 99 |
| cited_by_percentile_year.min | 89 |
| corresponding_author_ids | https://openalex.org/A5086300098 |
| countries_distinct_count | 2 |
| institutions_distinct_count | 8 |
| corresponding_institution_ids | https://openalex.org/I21370196 |
| sustainable_development_goals[0].id | https://metadata.un.org/sdg/3 |
| sustainable_development_goals[0].score | 0.8100000023841858 |
| sustainable_development_goals[0].display_name | Good health and well-being |
| citation_normalized_percentile.value | 0.91001045 |
| citation_normalized_percentile.is_in_top_1_percent | False |
| citation_normalized_percentile.is_in_top_10_percent | True |