ObjectivesExamining the associations between health and lifestyle factors recorded in the participants’ early teens and development of suicidal thoughts recorded 4 years later.DesignPopulation-based prospective cohort study.SettingsAll students in the two relevant year classes in Nord-Trøndelag County were invited, 80% attended both waves of data collection.Participants2399 secondary school students who participated in the Young-HUNT1 study in 1995–1997 (13–15 years old) were included in a follow-up study 4 years later (17–19 years old).Primary outcome measureSuicidal thoughts reported at age 17–19 years.Results408 (17%, 95% CI 15.5% to 18.5%) of the adolescents reported suicidal thoughts at follow-up, 158 (14.2%, CI 13.6% to 16.4%) boys and 250 (19.5%, CI 18.8% to 22.0%) girls. Baseline anxiety and depressive symptoms (adjusted OR (aOR) 1.9, CI 1.4 to 2.6), conduct problems (aOR 1.8, CI 1.3 to 2.6), overweight (aOR 1.9 CI 1.4 to 2.4), and muscular pain and tension (aOR 1.8, CI 1.4 to 2.4), were all associated with reporting suicidal thoughts at follow-up.ConclusionsOne in six young adults experienced suicidal thoughts, girls predominating. Suicidal thoughts were most strongly associated with symptoms of anxiety/depression, conduct problems, pain/tension and overweight reported when participants were 13–15 years old. Specific preventive efforts in these groups might be indicated. Future research should investigate whether similar associations are seen with suicide/suicidal attempts as endpoints.

BackgroundThe aims of this study were to describe alcohol use among Norwegian teenagers and investigate the associations between mental health problems and alcohol intoxications with focus on age and gender.MethodsPopulation based, cross-sectional survey addressing all adolescents aged 13–19 years, attending secondary or high school in North – Trøndelag County, Norway. 8983 youths (91%) answered the Young-HUNT questionnaire in the 1995–1997 survey. Logistic regression models were used to study associations.Results80% of the respondents reported that they had tried drinking alcohol, and 57% had been intoxicated at least once. The proportion of the students, which had tried alcohol, was equal in both genders and increased with age. Attention problems and conduct problems were strongly associated with frequent alcohol intoxications in both genders. Anxiety and depressive symptoms among girls were also related to high numbers of intoxicationsConclusionGender differences in number of alcohol intoxications were small. There was a close association between both conduct and attention problems and high alcohol consumption in both genders. Girls with symptoms of anxiety and depression reported more frequent alcohol intoxications.

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Health Services. Kabcnhavn, 1982. 3. Sheldon MG. M e d i c a l Audit in general practice. Royal College of General Practitioners. Occasional paper 20. London, 1982. 4. Bentzen N. Er kvalitetsvurdering i almen praksis mdig?