Brief mental health screening questionnaire for children and adolescents in primary care settings.

Unlabelled: Early detection of mental health problems is important. The implication of primary care professionals and the adequacy of instruments could be of great help.

Objective: To study the validity of a brief questionnaire based on psychosocial functioning to detect mental health problems in a high-risk general population.

What single reports from children and parents aggregate to attention deficit-hyperactivity disorder and oppositional defiant disorder diagnoses in epidemiological studies.

Objective: To analyze information on attention deficit-hyperactivity disorder (ADHD)-oppositional defiant disorder (ODD) and its consequences, provided separately or in combination by children and their parents in a longitudinal prospective study of 9-15 year-old children from the general population.

Method: Cross-sectional and longitudinal epidemiological indexes were compared for single and multiple reports. We evaluated which informant is required for the identification of each DSM-IV criterion.

Features associated with the non-participation and drop out by socially-at-risk children and adolescents in mental-health epidemiological studies.

Objective: To study socio-demographic and functional features related with non-collaboration in a longitudinal design of mental health within a high-risk population of individuals 9 and 13 years old.

Method: Regression analyses were used to assess factors affecting the decision to decline participation, and what characteristics both of children and families increase the probability of dropping out once the study had already started.

Results: Refusal of participation at the outset is more probable for lower socioeconomic groups, unemployed families (or with Social Security benefits), minority cultures and children having low school performance.