Factors behind a remarkable increase in adolescent psychiatric inpatient treatment between 1980 and 2010 - a nationwide register study.

Purpose: This register-based study aimed to evaluate trends in adolescent psychiatric inpatient care using nationwide data from three consecutive decades.

Methods: The study population ( 17,112) comprised all Finnish citizens aged 13-17 receiving their first-ever psychiatric inpatient treatment between 1980 and 2010 in Finland. Information on inpatient care in the psychiatric hospital was obtained from the Hospital Discharge Register and the Care Register for Health Care, which contains data on all patients discharged from all Finnish inpatient psychiatric health services.

Self-reported depression is increasing among socio-economically disadvantaged adolescents - repeated cross-sectional surveys from Finland from 2000 to 2011.

Background: Adolescent depression is more common in lower socio-economic groups. Whether this pattern has changed over time, is not known.We examined the prevalence of self-reported depression and its changes in socio-economic groups from 2000 to 2011 among Finnish adolescents.

Evolution of the association between parental and child smoking in Finland between 1977 and 2005.

Objectives: To study changes in the family smoking profile and in the association between parental and child smoking from 1977 to 2005.

Methods: Data was based on biennial surveys using nationally-representative samples of 14-18-year-old Finns (n=58,279). Response rate ranged between 88% (1977) and 65% (2005).

The association of parental monitoring and family structure with diverse maladjustment outcomes in middle adolescent boys and girls.

The aim of this study was to study the associations between family structure, parental monitoring and maladjustment outcomes among middle adolescent girls and boys. Data was collected through a school-based survey of a nationally representative sample of 17,643 Finnish adolescents aged 14-16 years. The less the parents knew the adolescents' friends and whereabouts, the more common were all the maladjustment outcomes studied.

Delinquency and the profile of offences among depressed and non-depressed adolescents.

Background: Depression has previously been found to be closely connected to adolescent delinquency, but little is known about how depression is related to different types of delinquency.

Aim: To investigate patterns of criminal behaviour according to depression among repeatedly delinquent adolescents.

Method: The sample was 14- to 16-year-old repeatedly delinquent adolescents (n 3679) taking part in the Finnish School Health Promotion Study, surveyed for versatility and specialization of delinquency in relation to depression.