Jean-Jacques Breton

Quebec child mental health survey: prevalence of DSM-III-R mental health disorders.

The Quebec Child Mental Health Survey (QCMHS) was conducted in 1992 on a representative sample of 2400 children and adolescents aged 6 to 14 years from throughout Quebec. Prevalences of nine Axis-I DSM-III-R (American Psychiatric Association, 1987) mental health disorders were calculated based on each informant (for 6-11-year-olds: child, parent, and teacher; for 12-14-year-olds: child and parent). Informant parallelism allows the classification of results of the demographic variables associated with disorders in the logistic regression models. This strategy applies to group variables (correlates of disorders) whereas informant agreement applies to individual diagnoses. Informant parallelism implies that results for two informants or more are in the same direction and significant. In the QCMHS, informant parallelism exists for disruptive disorders, i.e. in two ADHD regression models (child and parent) higher rates among boys and young children, and in three oppositional/conduct disorders regression models (child, parent, and teacher) higher rates among boys. No informant parallelism is observed in the logistic regression models for internalizing disorders, i.e. the patterns of association of demographic variables with anxiety and depressive disorders vary across informants. Urban-rural residence does not emerge as a significant variable in any of the logistic regression models. The overall 6-month prevalences reach 19.9% according to the parent and 15.8% according to the child. The implications of the results for policy makers and clinicians are discussed.

Do Children Aged 9 through 11 Years Understand the DISC Version 2.25 Questions

OBJECTIVE To assess the understanding of Diagnostic Interview Schedule for Children-Version 2.25 (DISC-2.25) questions by children aged 9 through 11 years. METHOD Two hundred forty children were recruited from four public schools. The cognitive appraisal of 280 questions from the most prevalent DSM-III-R diagnoses was evaluated. The collaboration of four children was necessary to cover one DISC. Sixty DISCs, evenly distributed according to age and sex, were completed. Two child psychiatrists evaluated the childrens answers. Nonparametric tests were used to assess understanding of questions as a whole, of time concepts (overall, categories, number), and of questions based on the number of words. RESULTS Children aged 9, 10, and 11 years understood 38%, 38%, and 42% of the questions as a whole, respectively, and 26%, 24%, and 30% of the overall time concepts, respectively. The understanding rates of questions as a whole were significantly higher than those of overall time concepts. Durations were significantly better understood than periods and frequencies, and questions having one time component were significantly better grasped than those with two or more. Shorter questions were significantly better understood than longer ones. CONCLUSION Although the DISC has been greatly improved since the initial version, the results suggest that additional revision is needed before clinicians or researchers use the DISC with younger children.

Industrial disaster and mental health of children and their parents

OBJECTIVE We report the findings of research conducted a year after an industrial disaster (PCB fire), which occurred on Montreals South Shore in 1988. A total of 1,663 families were evacuated for a period of 18 days. The study evaluated 174 children between the ages of three and eleven years: 87 in the exposed group and 87 in the control sample. METHOD Structured questionnaires were administered to the children and their mothers and fathers during home visits. RESULTS Based on the responses of the children and the mothers, children aged 6 to 11 years displayed more overall internalized and post-traumatic stress disorder (PTSD) symptoms than did those in the control group. CONCLUSIONS The study demonstrates that the mental health of fathers as well as mothers correlates with childrens symptoms and that parents are able to accurately observe their childs reaction to a disaster.

Informant-Specific Correlates of Suicidal Behavior in a Community Survey of 12- to 14-Year-Olds

OBJECTIVES To arrive at a better estimation of informant-specific correlates of suicidal behavior in young adolescents and to see how agreements and discrepancies between child and parent informants can contribute to the development of research and interventions. METHOD The weighted sample from the Quebec Child Mental Health Survey conducted in 1992 included 825 adolescents, aged 12 to 14 years, and their parents. The adolescent and one parent were questioned by two different interviewers. The response rate was 80.3%. Three categories of independent variables were assessed: adolescent, family, and socioeconomic characteristics. Logistic regression models were based on the adolescent and parent informant reports. RESULTS Parents identified 6 of the 59 adolescents having reported suicidal ideation and 2 of the 36 adolescents having reported suicide attempts. Two informant-specific models of correlates of suicidal behavior were found. The adolescent model included internalizing and externalizing mental disorders, family stressful events, and parent-adolescent relationship difficulties, while the parent model included perceiving a need for help for the adolescent, parents depressive disorders, and parent-adolescent relationship difficulties. CONCLUSION The study shows the relevance of considering informant-specific correlates of suicidal behavior in the development of research and interventions targeting youths suicidal behavior.

Correlates of Mental Disorders in the Quebec General Population of 6 to 14-Year Olds

Previous epidemiological studies of correlates of child and adolescent mental disorders in the general population have focused more on child/adolescent and socioeconomic/sociodemographic characteristics than on family characteristics. Moreover, there are no generally accepted methods to analyze and interpret correlates. The purpose of the Quebec Child Mental Health Survey in this regard was twofold: (1) to identify correlates of DSM-III-R internalizing and externalizing disorders according to informant (youth, parent, teacher), for three age groups (6–8, 9–11, and 12–14 years), including relevant family characteristics not considered in previous studies; and (2) to interpret the relative importance of risk indicators by ranking correlates according to strength and consistency of association across age groups. Logistic regression models suggest the inconsistency of correlates across informants. The ranking of correlates reveals that individual and family characteristics make a more important contribution than do socioeconomic characteristics, thereby supporting the relevance of proximal variables in the development of psychopathology.

Are child and adolescent responses to placebo higher in major depression than in anxiety disorders? A systematic review of placebo-controlled trials.

Background In a previous report, we hypothesized that responses to placebo were high in child and adolescent depression because of specific psychopathological factors associated with youth major depression. The purpose of this study was to compare the placebo response rates in pharmacological trials for major depressive disorder (MDD), obsessive compulsive disorder (OCD) and other anxiety disorders (AD-non-OCD). Methodology and Principal Findings We reviewed the literature relevant to the use of psychotropic medication in children and adolescents with internalized disorders, restricting our review to double-blind studies including a placebo arm. Placebo response rates were pooled and compared according to diagnosis (MDD vs. OCD vs. AD-non-OCD), age (adolescent vs. child), and date of publication. From 1972 to 2007, we found 23 trials that evaluated the efficacy of psychotropic medication (mainly non-tricyclic antidepressants) involving youth with MDD, 7 pertaining to youth with OCD, and 10 pertaining to youth with other anxiety disorders (N = 2533 patients in placebo arms). As hypothesized, the placebo response rate was significantly higher in studies on MDD, than in those examining OCD and AD-non-OCD (49.6% [range: 17–90%] vs. 31% [range: 4–41%] vs. 39.6% [range: 9–53], respectively, ANOVA F = 7.1, p = 0.002). Children showed a higher stable placebo response within all three diagnoses than adolescents, though this difference was not significant. Finally, no significant effects were found with respect to the year of publication. Conclusion MDD in children and adolescents appears to be more responsive to placebo than other internalized conditions, which highlights differential psychopathology.

Pilot Study for the Quebec Child Mental Health Survey: Part I. Measurement of Prevalence Estimates among Six to 14 Year Olds*

A pilot study for a Quebec Child Mental Health Survey was completed in 1990 with 139 children aged six to 14 years from the general population. Six month prevalence estimates for seven disorders were established using DSM-HI-R criteria alone and in combination with an impairment index related to the diagnoses. Prevalence estimates were studied separately for parents and children. Each age group (six to 11, 12 to 14) was also studied separately. The impairment index, working as a severity scale, lowered prevalence estimates and allowed identification of impairing and non impairing diagnoses. Little overlap was found between informants.

Cognitive correlates of serious suicidal ideation in a community sample of adolescents

BACKGROUND Studies indicate that a dysfunctional attributional style, problem-solving deficits and hopelessness place youths at risk of developing suicidal thoughts and engaging in suicidal behaviour. However, in the realm of suicidality in adolescent, no study has examined the linkages between these three cognitive variables and suicidal ideation in non-clinical samples while taking into account the moderating role of gender on the relationships and controlling for depression. METHODS In this community study of 712 adolescents 14-18 years of age, through a multivariate approach, the interaction between the cognitive variables, depression and gender was examined with depression controlled in the analyses. RESULTS Problem-solving deficits and hopelessness proved predictive of such ideation whether or not depressive symptoms were controlled in the analyses. Negative problem orientation/avoidant style was more predictive of ideation in boys than in girls. On the other hand, hopelessness was more predictive for girls than boys. LIMITATIONS Results were based on a convenience community sample of adolescents and a cross-sectional survey. CONCLUSIONS Results suggest that a unique explanatory model of the suicide process in adolescence that fails to take account of gender would be ill informed. Suicide prevention strategies should be differentiated according to gender with a stronger emphasis in hopelessness in female adolescents, and problem-solving deficits in male adolescents.

Challenges Facing Child Psychiatry in Quebec at the Dawn of the 21st Century

Objectives: This study aimed to identify hospital resources by region, determine human resources by type of service and region, and describe how services generally operate in child psychiatry within the province of Quebec. Methods: Data collection took place from May to October 2001. We sent a semistructured questionnaire to all child psychiatry service heads. We collected human resource data and produced organizational charts based on the responses obtained. These charts were forwarded to each of the participating services for validation. We grouped Quebecs 18 social health regions into 3 categories: central (4 regions with 606 370 youths), adjoining (4 regions with 589 750 youths), and peripheral (10 regions with 368 635 youths). Results: The response rate was 100%. We identified 35 child psychiatry services: 13 in the central regions, 9 in the adjoining regions, and 13 in the peripheral regions. Overall, we identified 177 short-stay beds, 476 places in day or evening hospitals, and 113 places in day or evening centres. Most of these resources were located in the central regions. Quebec had 138.2 full-time equivalent (FTE) child psychiatrists (69.8% in the central regions) and 706 FTE professionals. At March 31, 2001, 4285 youths were waiting for services. Conclusions: We observed a shortage of child psychiatrists and professionals, regardless of the norm used. Adjoining and peripheral regions should have access to a minimal range of human and hospital resources in child psychiatry.

Are Mental Health Services for Children Distributed According to Needs

Objectives: The purpose of this study was twofold: 1) to determine whether publicly funded mental health services and resources available in 4 large regions in the province of Quebec were distributed according to the mental health needs of children aged 6 to 14 years and 2) to assess whether the variations in mental health services and resources across the 4 regions had changed over a 5-year period. Methods: Indicators of need according to the childs parent (presence of mental disorder, measure of adaptation, and perception of need for help) from an epidemiologic survey of 2400 noninstitutionalized children were compared with both in-school and community professional resources and with physician and hospital services in 1992–1993. Resource and service data were also collected for 1997–1998. Resource and service data came from professional colleges and government administrative databases. Results: No significant regional differences were found for need indicators, but there were large discrepancies in mental health resources and services in 1992–1993. Differences in professional resources were largest for special education teachers in the school system and for psychiatrists in the community. The regional differences in resources and services were as large in 1997–1998 as they were in 1992–1993. Conclusions: Despite universal health care in Quebec and a government mental health policy stressing equity of access, the available mental health resources for children aged 6 to 14 years are not distributed across regions according to needs. More evidence-based planning is required, specifically using epidemiologic survey data, to match resources to needs and to monitor changes over time.