Torstein Vik
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View article: Cerebral palsy and perinatal mortality in children born in Norway to immigrant mothers
Cerebral palsy and perinatal mortality in children born in Norway to immigrant mothers Open
Aim To compare the prevalence and clinical characteristics of cerebral palsy (CP), and perinatal mortality, in children born to non‐immigrant mothers with children born to immigrant mothers. Method This was a registry‐based cross‐sectional…
View article: Postneonatal Cerebral Palsy in Europe: Prevalence and Clinical Characteristics According to Contributory Events: An <scp>SCPE</scp> Study
Postneonatal Cerebral Palsy in Europe: Prevalence and Clinical Characteristics According to Contributory Events: An <span>SCPE</span> Study Open
Background Postneonatal cerebral palsy (PNCP) is rare and requires large databases to be studied over time. Objectives To study the time trend of prevalence of PNCP overall and by cause, and to describe the clinical characteristics of chil…
View article: Does botulinum neurotoxin A make walking easier in children with cerebral palsy? A randomized clinical trial
Does botulinum neurotoxin A make walking easier in children with cerebral palsy? A randomized clinical trial Open
Aim To assess the effect of single botulinum neurotoxin A (BoNT‐A) injections into the calf muscles on the gross energy cost of walking in children with cerebral palsy (CP) and to evaluate the effect of BoNT‐A on walking capacity, physical…
View article: The increased risk of cerebral palsy associated with assisted reproductive technology is mainly attributable to multiple pregnancies
The increased risk of cerebral palsy associated with assisted reproductive technology is mainly attributable to multiple pregnancies Open
Sir, We thank Dr Jayakumaran and colleagues1 for their interest in our study.2 It is our understanding that their main concerns are the need for additional analyses, and a disagreement with our key message “There is still an increased risk…
View article: Association between gestational levels of toxic metals and essential elements and cerebral palsy in children
Association between gestational levels of toxic metals and essential elements and cerebral palsy in children Open
Introduction Cerebral palsy (CP) is the most common motor disability in childhood, but its causes are only partly known. Early-life exposure to toxic metals and inadequate or excess amounts of essential elements can adversely affect brain …
View article: Cerebral palsy in children born after assisted reproductive technology in Norway: Risk, prevalence, and clinical characteristics
Cerebral palsy in children born after assisted reproductive technology in Norway: Risk, prevalence, and clinical characteristics Open
Introduction The aim was to investigate the risk, prevalence, and clinical characteristics of cerebral palsy among children born after assisted reproductive technology (ART) in Norway. Material and methods All liveborn children from 2002 t…
View article: Association between gestational levels of toxic metals and essential elements and cerebral palsy in children
Association between gestational levels of toxic metals and essential elements and cerebral palsy in children Open
Introduction Cerebral palsy (CP) is the most common motor disability in childhood, but its causes are only partly known. Early-life exposure to toxic metals and inadequate or excess amounts of essential elements can adversely affect brain …
View article: Classification of events contributing to postneonatal cerebral palsy: Development, reliability, and recommendations for use
Classification of events contributing to postneonatal cerebral palsy: Development, reliability, and recommendations for use Open
Aim This paper introduces the Surveillance of Cerebral Palsy in Europe (SCPE) classification of events contributing to postneonatally acquired cerebral palsy, presents its interrater reliability, and describes the cases identified in the S…
View article: Mortality and neurodevelopmental outcome after invasive group B streptococcal infection in infants
Mortality and neurodevelopmental outcome after invasive group B streptococcal infection in infants Open
Aim To assess case fatality rate (CFR), infant mortality, and long‐term neurodevelopmental disorders (NDDs) after invasive group B streptococcal (GBS; Streptococcus agalactiae ) infection in infants. Method Children born in Norway between …
View article: Prevalence, birth, and clinical characteristics of dyskinetic cerebral palsy compared with spastic cerebral palsy subtypes: A Norwegian register‐based study
Prevalence, birth, and clinical characteristics of dyskinetic cerebral palsy compared with spastic cerebral palsy subtypes: A Norwegian register‐based study Open
Aim To study the prevalence, birth, and clinical characteristics of children with dyskinetic cerebral palsy (CP) in Norway compared with spastic quadriplegic CP and other spastic CP subtypes. Method Data on children born from 1996 to 2015 …
View article: Norwegian paediatric habilitation centres judge their own competence on cerebral visual impairment as limited
Norwegian paediatric habilitation centres judge their own competence on cerebral visual impairment as limited Open
Aim Cerebral visual impairment (CVI), a frequently occurring functional impairment in children with neurodevelopmental disorders, leads to communicative, social and academic challenges. In Norway, children with neurodevelopmental disorders…
View article: Household income, fetal size and birth weight: an analysis of eight populations
Household income, fetal size and birth weight: an analysis of eight populations Open
Background The age at onset of the association between poverty and poor health is not understood. Our hypothesis was that individuals from highest household income (HI), compared to those with lowest HI, will have increased fetal size in t…
View article: High occurrence of perinatal risk factors and more severe impairments in children with postneonatal cerebral palsy in Norway
High occurrence of perinatal risk factors and more severe impairments in children with postneonatal cerebral palsy in Norway Open
Aim To describe causal events, perinatal risk factors and clinical characteristics in children with postneonatal cerebral palsy (PNCP). Methods Population‐based registry study of Norwegian children born 1999–2013. Prevalence, causal events…
View article: External validity of the Both Hands Assessment for evaluating bimanual performance in children with bilateral cerebral palsy
External validity of the Both Hands Assessment for evaluating bimanual performance in children with bilateral cerebral palsy Open
Aim To investigate the external validity of the Both Hands Assessment (BoHA), a new test evaluating bimanual performance in children with bilateral cerebral palsy (CP), by analysing its relationship to established measurements of hand func…
View article: Does caesarean delivery in the first pregnancy increase the risk for adverse outcome in the second? A registry-based cohort study on first and second singleton births in Norway
Does caesarean delivery in the first pregnancy increase the risk for adverse outcome in the second? A registry-based cohort study on first and second singleton births in Norway Open
Objective To explore if newborns in the second pregnancy following a previous caesarean delivery (CD) have higher risk of perinatal mortality or cerebral palsy than newborns in pregnancies following a previous vaginal delivery (VD). Design…
View article: Incidence of invasive Group B Streptococcal infection and the risk of infant death and cerebral palsy: a Norwegian Cohort Study
Incidence of invasive Group B Streptococcal infection and the risk of infant death and cerebral palsy: a Norwegian Cohort Study Open
Background Group B Streptococcus (GBS) is the leading cause of invasive neonatal infection worldwide. In high-income countries mortality rates are 4–10%, and among survivors of GBS meningitis 30–50% have neurodevelopmental impairments. We …
View article: Access to Intrathecal Baclofen Treatment for Children with Cerebral Palsy in European Countries: An SCPE Survey Reveals Important Differences
Access to Intrathecal Baclofen Treatment for Children with Cerebral Palsy in European Countries: An SCPE Survey Reveals Important Differences Open
Aim The aim is to study access to intrathecal baclofen (ITB) for children with cerebral palsy (CP) in Europe, as an indicator of access to advanced care. Methods Surveys were sent to CP registers, clinical networks, and pump manufacturers.…
View article: Comorbidities in cerebral palsy: a patient registry study
Comorbidities in cerebral palsy: a patient registry study Open
Aim To describe the total burden of disease in individuals with cerebral palsy ( CP ) in Norway. Method A comprehensive set of disorder categories were extracted from the Norwegian Patient Registry using International Statistical Classific…
View article: Additional file 1: of Adherence to guidelines and suboptimal practice in term breech delivery with perinatal death- a population-based case-control study in Norway
Additional file 1: of Adherence to guidelines and suboptimal practice in term breech delivery with perinatal death- a population-based case-control study in Norway Open
Items recommended in the national Norwegian guidelines for breech presentation (2014). (ZIP 12 kb)
View article: Parental socioeconomic status and risk of cerebral palsy in the child: evidence from two Nordic population-based cohorts
Parental socioeconomic status and risk of cerebral palsy in the child: evidence from two Nordic population-based cohorts Open
Risk of CP in two Scandinavian countries was lower among educated parents and mothers with a partner, but unrelated to income. Factors underlying this stable association with education are unknown, but could include differences in potentia…
View article: Congenital anomalies and the severity of impairments for cerebral palsy
Congenital anomalies and the severity of impairments for cerebral palsy Open
Aim To study the prevalence of congenital anomalies among children with cerebral palsy ( CP ) born at term or late preterm, and if CP subtypes and clinical manifestations differ between children with and without congenital anomalies. Metho…
View article: Is vaginal breech delivery associated with higher risk for perinatal death and cerebral palsy compared with vaginal cephalic birth? Registry-based cohort study in Norway
Is vaginal breech delivery associated with higher risk for perinatal death and cerebral palsy compared with vaginal cephalic birth? Registry-based cohort study in Norway Open
Objective This paper aims to study if vaginal breech delivery is associated with increased risk for neonatal mortality (NNM) or cerebral palsy (CP) in Norway where vaginal delivery accounts for 1/3 of all breech deliveries. Design Cohort s…
View article: A systematic review of maternal smoking during pregnancy and fetal measurements with meta-analysis
A systematic review of maternal smoking during pregnancy and fetal measurements with meta-analysis Open
Maternal smoking during pregnancy is associated with reduced fetal measurements after the first trimester, particularly reduced head size and femur length. These effects may be attenuated if mothers quit or reduce cigarette consumption dur…