Massimiliano Orri
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View article: Health Service Use Among Young Adults With a History of Adolescent Cannabis Use
Health Service Use Among Young Adults With a History of Adolescent Cannabis Use Open
Importance Adolescent cannabis use is a substantial public health concern given its associations with adverse mental and physical health outcomes. Understanding how distinct use patterns are associated with medical care utilization in youn…
View article: Preterm Birth and Risk of Psychiatric Disorders: A Register-Linkage Cohort Study: Liens entre la naissance prématurée et le risque de troubles psychiatriques : une étude de cohorte avec couplage de registres
Preterm Birth and Risk of Psychiatric Disorders: A Register-Linkage Cohort Study: Liens entre la naissance prématurée et le risque de troubles psychiatriques : une étude de cohorte avec couplage de registres Open
Objectives The objectives of this study were to quantify the associations between preterm birth and adolescent-to-adult psychiatric disorders in the Quebec (Canada) population and to determine whether sex and socioeconomic status (SES) mod…
View article: Children’s mental health symptoms over three decades (1993–2022): a comparison of population-based cross-sectional samples
Children’s mental health symptoms over three decades (1993–2022): a comparison of population-based cross-sectional samples Open
Concerns have been raised about an increase in children's mental health symptoms over the past 30 years, including after COVID-19 lockdowns. Yet, few studies have investigated variations over generations, while considering sex and socioeco…
View article: Outcome Evaluation of a Multimodal Suicide Prevention Program Designed Through International Collaboration: Protocol for a Controlled Interrupted Time Series Study
Outcome Evaluation of a Multimodal Suicide Prevention Program Designed Through International Collaboration: Protocol for a Controlled Interrupted Time Series Study Open
Background The Coopération Québec-France contre la Dépression et l’Isolement (CQFD-I) initiative represents a collaborative effort between Outaouais, a region in Quebec, and Brest, a metropolitan area in France, to reduce suicide through a…
View article: Cross-Cultural Consortium on Irritability (C3I): An International Network for Research on Cultural Similarities and Differences in Irritability
Cross-Cultural Consortium on Irritability (C3I): An International Network for Research on Cultural Similarities and Differences in Irritability Open
View article: Bidirectional Associations Between Civic Engagement, Depressive Symptoms, and Suicidality in Youth: A Population‐Based Study
Bidirectional Associations Between Civic Engagement, Depressive Symptoms, and Suicidality in Youth: A Population‐Based Study Open
Introduction Civic engagement is common in youth, yet its longitudinal association with mental health remains understudied. This study aims to document bidirectional associations between civic engagement, depressive symptoms, and suicidali…
View article: Associations between childhood receptive vocabulary and suicide attempt during adolescence and young adulthood
Associations between childhood receptive vocabulary and suicide attempt during adolescence and young adulthood Open
These results emphasize the potential role of childhood receptive vocabulary skills as a vulnerability marker for youth suicide attempt risk.
View article: Association of hyperactivity–impulsivity and inattention symptom profiles with suicide attempt: an 18-year population-based cohort study
Association of hyperactivity–impulsivity and inattention symptom profiles with suicide attempt: an 18-year population-based cohort study Open
Background Attention-deficit/hyperactivity disorder (ADHD) symptomatology in childhood is associated with a high risk of suicide attempt later in life. However, symptom presentation in ADHD is heterogeneous, and little is known about how s…
View article: Adolescent cannabis use and young adult healthcare use in a population-based birth cohort linked to healthcare administrative records
Adolescent cannabis use and young adult healthcare use in a population-based birth cohort linked to healthcare administrative records Open
Introduction Evidence links early adolescent cannabis use (CU) to long-term health risks, but most studies lack comprehensive early-life confounder data and rely on subjective health measures. Objectives To assess the association between a…
View article: Penalized generalized linear mixed models for longitudinal outcomes in genetic association studies
Penalized generalized linear mixed models for longitudinal outcomes in genetic association studies Open
This work is motivated by analyses of longitudinal data collected from participants in the Quebec Longitudinal Study of Child Development (QLSCD) and the Quebec Newborn Twin Study (QNTS) to identify important genetic predictors for emotion…
View article: Examining harsh parenting as a moderator in the association between childhood irritability and adolescent suicidal behaviors
Examining harsh parenting as a moderator in the association between childhood irritability and adolescent suicidal behaviors Open
Background Childhood irritability increases the risk of later suicidal behaviors, but the moderators of this association have not been identified. We investigated harsh parenting as a moderator in the association of childhood irritability …
View article: Associations of childhood irritability and parenting profiles with youth suicide attempt: a longitudinal person-centered approach
Associations of childhood irritability and parenting profiles with youth suicide attempt: a longitudinal person-centered approach Open
Background Childhood irritability and harsh parenting are associated with youth suicide attempts. Parents’ harsh reactions have been associated with children’s irritable behavior. While studies have shown individual associations of irritab…
View article: Mental health, risk behaviors, and social life factors in relation to adolescents’ suicide ideation, plans and attempt
Mental health, risk behaviors, and social life factors in relation to adolescents’ suicide ideation, plans and attempt Open
Objective This study investigated differences in mental health and well-being, risk behaviors, and social life factors among adolescents who experienced different forms of suicidality. Methods We examined 18-years-olds in the Danish Nation…
View article: A longitudinal study of adolescent pathways differentiating suicide ideation and attempt in early adulthood
A longitudinal study of adolescent pathways differentiating suicide ideation and attempt in early adulthood Open
Objective Suicide ideation and attempt are leading risk factors for mortality in young adults. However, the adolescent risk factors distinguishing suicide ideation from attempt in young adults remain unclear. The present study aimed to exa…
View article: Association of youth climate change worry with present and past mental health symptoms: a longitudinal population-based study
Association of youth climate change worry with present and past mental health symptoms: a longitudinal population-based study Open
View article: Parental Postpartum Depression and Children’s Socioemotional Development: The Role of Socioeconomic Inequality
Parental Postpartum Depression and Children’s Socioemotional Development: The Role of Socioeconomic Inequality Open
PPD in both parents increases the risk of mental health problems in children, with a greater effect in low SES families.
View article: The interplay of maternal and paternal postpartum depressive symptoms with children's internalizing and externalizing symptoms from childhood to adolescence: does socioeconomic status matter? A longitudinal cohort study
The interplay of maternal and paternal postpartum depressive symptoms with children's internalizing and externalizing symptoms from childhood to adolescence: does socioeconomic status matter? A longitudinal cohort study Open
Background Maternal postpartum depression is an important risk factor for internalizing and externalizing problems in children. The role of concurrent paternal depression remains unclear, especially by socioeconomic status. This study exam…
View article: Trajectories of suicidality during a 2-year early-intervention program for first-episode psychosis: A longitudinal study
Trajectories of suicidality during a 2-year early-intervention program for first-episode psychosis: A longitudinal study Open
Little is known about the individual course of suicidal ideations and attempts (i.e., suicidality) after treatment initiation. We examined the trajectories of suicidality and associated risk factors over a 2-year early intervention program…
View article: Childhood and Adolescent Depression Symptoms and Young Adult Mental Health and Psychosocial Outcomes
Childhood and Adolescent Depression Symptoms and Young Adult Mental Health and Psychosocial Outcomes Open
Importance Depression is a leading cause of disability. The timing and persistence of depression may be differentially associated with long-term mental health and psychosocial outcomes. Objective To examine if depression symptoms during ea…
View article: Does early child negative emotionality moderate the association between maternal stimulation and academic readiness and achievement?
Does early child negative emotionality moderate the association between maternal stimulation and academic readiness and achievement? Open
We investigated whether child temperament (negative emotionality, 5 months) moderated the association between maternal stimulation (5 months–2½ years) and academic readiness and achievement (vocabulary, mathematics, and reading). We applie…
View article: Correction: Description of patients with eating disorders by general practitioners: a cohort study and focus on co-management with depression
Correction: Description of patients with eating disorders by general practitioners: a cohort study and focus on co-management with depression Open
View article: Description of patients with eating disorders by general practitioners: a cohort study and focus on co-management with depression
Description of patients with eating disorders by general practitioners: a cohort study and focus on co-management with depression Open
View article: Exploring the Relationship Between Suicidality and Persistent Negative Symptoms Following a First Episode of Psychosis
Exploring the Relationship Between Suicidality and Persistent Negative Symptoms Following a First Episode of Psychosis Open
Background and Hypothesis Suicide is a leading cause of death in first-episode psychosis (FEP), with an elevated risk during the first year following illness onset. The association between negative symptoms and suicidality remains contenti…
View article: Association of chronic pain with suicide attempt and death by suicide: A two-sample Mendelian randomization
Association of chronic pain with suicide attempt and death by suicide: A two-sample Mendelian randomization Open
Prior studies have suggested an association between chronic pain and suicidal behavior. However, evidence supporting the causal nature of this association, and the role played by depression, remain difficult to establish due to confounding…
View article: Psychosocial interventions for the prevention of self-harm repetition: protocol for a systematic review and network meta-analysis
Psychosocial interventions for the prevention of self-harm repetition: protocol for a systematic review and network meta-analysis Open
Introduction Suicide is an important public health problem. Providing evidence-based psychosocial interventions to individuals presenting with self-harm is recognised as an important suicide prevention strategy. Therefore, it is crucial to…
View article: Improving Children’s Mental Health Literacy Through the Cocreation of an Intervention and Scale Validation: Protocol for the CHILD-Mental Health Literacy Research Study
Improving Children’s Mental Health Literacy Through the Cocreation of an Intervention and Scale Validation: Protocol for the CHILD-Mental Health Literacy Research Study Open
Background Children’s mental health is a public health priority, with 1 in 5 European children younger than 12 years having a behavioral, developmental, or psychological disorder. Mental health literacy (MHL) is a modifiable determinant of…
View article: Improving Children’s Mental Health Literacy Through the Cocreation of an Intervention and Scale Validation: Protocol for the CHILD-Mental Health Literacy Research Study (Preprint)
Improving Children’s Mental Health Literacy Through the Cocreation of an Intervention and Scale Validation: Protocol for the CHILD-Mental Health Literacy Research Study (Preprint) Open
BACKGROUND Children’s mental health is a public health priority, with 1 in 5 European children younger than 12 years having a behavioral, developmental, or psychological disorder. Mental health literacy (MHL) is a modifiable determinant o…
View article: Exploring the relationship between suicidality and persistent negative symptoms following a first episode of psychosis
Exploring the relationship between suicidality and persistent negative symptoms following a first episode of psychosis Open
Background and HypothesisSuicide is a leading cause of death in first-episode psychosis (FEP), with an elevated risk during the first year following illness onset. The association between negative symptoms and suicidality remains contentio…
View article: Exploring the relationship between suicidality and persistent negative symptoms following a first episode of psychosis
Exploring the relationship between suicidality and persistent negative symptoms following a first episode of psychosis Open
Background and HypothesisSuicide is a leading cause of death in first-episode psychosis (FEP), with an elevated risk during the first year following illness onset. The association between negative symptoms and suicidality remains contentio…
View article: Child Sexual Abuse and Employment Earnings in Adulthood: A Prospective Canadian Cohort Study
Child Sexual Abuse and Employment Earnings in Adulthood: A Prospective Canadian Cohort Study Open