Growing up in Uppsala: The “New Morbidity” in the Adolescent Period A Longitudinal Epidemiological Study Based on School Data and Some External Sources

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Abstract
The study comprised all 1805 children, most born in 1967, who were in grade 9 of the compulsory school in Uppsala in the spring of 1983 (cross-sectional population) and all 1723 children born in 1967 and resident in Uppsala at ages 10 and 15 years (longitudinal population). The aims were (1) to describe and analyse a normal population of 9th graders in social, medical, educational and psychological respects, (2) to assess relationships between risk level at 10 years, school-identified difficulties at 15 years and psychosocial problems up to age 18, (3) to assess relationships between intervention in school at 15 years and psychosocial problems up to 18 years. Ten-year data had been collected through teacher interviews and analysis of school health records in grade 3. Fifteen-year data were collected through interviews with school health staff and analysis of school health records in grade 9. School marks were gathered at the end of grade 9. Psychosocial problems up to 18 years were assessed on the basis of all registered contacts with official institutions outside school (authorities for care of the handicapped, Department of Child Psychiatry, social agencies, legal authorities). CROSS-SECTIONAL POPULATION. Children older than the grade norm and children of lower social class manifested a more problematic school adjustment and had lower mean marks than younger children and those of higher social classes. Twenty-five per cent of the population had entries in official registers up to age 18, indicating psychosocial problems. Social conditions were related both to the learning process and to psychological health. Educational and psychological problems were mutually correlated. Social problems increased the risk of a number of medical conditions. There were certain relationships between medical and educational problems as well as between medical and psychological problems. LONGITUDINAL POPULATION. Both 10- and 15-year data, particularly the latter, contributed independently to the prediction of psychosocial problems up to age 18. There was a considerably increased risk of psychosocial problems if there had been numerous school difficulties at age 15. Children who had been offered intervention in school at 15 years did not escape psychosocial problems up to 18 years more frequently than children without interventions. In fact, the contrary was the case: with more interventions, the frequencies of psychosocial problems up to age 18 increased.