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dc.contributor.authorStrandheim, Arvenb_NO
dc.date.accessioned2014-12-19T14:22:58Z
dc.date.available2014-12-19T14:22:58Z
dc.date.created2013-07-08nb_NO
dc.date.issued2013nb_NO
dc.identifier635952nb_NO
dc.identifier.isbn978-82-471-4372-8 (printed ver.)nb_NO
dc.identifier.isbn978-82-471-4373-5 (electronic ver.)nb_NO
dc.identifier.urihttp://hdl.handle.net/11250/264532
dc.description.abstractBackground: Early contact with alcohol is reported to enhance both substance use and health problems in adolescence and later in life. While some studies have suggested that pre-existing health problems facilitate the early initiation and use of alcohol and drugs, other have emphasized the common background variables for substance use and health problems in adolescence, such as genes, family, parenting, childhood neglect and abuse. Still no consensus or collective understanding of associations and causal mechanism is evident. Suicidal thoughts and behaviour increases after puberty, and have been associated with both mental health problems, alcohol and drug use. Among adolescents the risk factors for suicidal thoughts are sparsely studied. Aim: To estimate prevalence of alcohol use in Norwegian teenagers and examine the relationships between alcohol intoxications and self-perceived mental and physical health, in a total county adolescent population. The impact of gender and age on these relationships was an important aspect of the studyTo study behavioural* and health* problems in early adolescence as risk factors for regular drinking and drug use in late adolescence. Both gender and experience of early alcohol intoxication were studied as modifying factorsTo identify and evaluate behavioural and health problems as possible risk factors for developing suicidal thoughts during adolescence (Paper IV) Data-materials and Method: The Nord-Trøndelag Health Study (HUNT 2), conducted in 1995–1997, invited all the county’s inhabitants of 13 years and older to participate. All students aged 13–19 years were included in the Young-HUNT 1 study. In all, 8 983 youths (91%) answered the Young-HUNT questionnaire, which was the base for the two crosssectional studies (Paper I-II), exploring prevalence and associations between health problems and alcohol use in adolescence. Four years later, 2000-2001, all students in the last two years of high school were invited to take part in Young-HUNT 2. 2 399 students (81%) who participated both in Young-HUNT 1 (baseline) and Young-HUNT 2 (follow-up) comprised the cohort of the prospective studies (Paper III-IV). A prospective cohort method was applied using data from the students who participated in both Young-HUNT 1 and 2. The mean follow-up time for the participants was 3.9 years. Results: In Young-HUNT 1 (1995-97), 80% of the respondents reported that they had tried drinking alcohol; 57% said they had been intoxicated at least once, and 29% reported intoxication 10 times or more. In the cross-sectional analysis (5;6), ill health perception was associated with frequent alcohol intoxications. Attention problems and conduct problems were strongly associated with more frequent alcohol intoxications in both genders. Bodily pain and tension symptoms had a positive relationship to frequency of intoxications in both genders. Among girls, anxiety and depressive symptoms were also related to frequent intoxications. Conduct problems at the age of 13 -15 years more than doubled the risk for both frequent alcohol use and initiation of drug use later in adolescence. Attention and conduct problems in early adolescence were strongly associated with suicidal thoughts later in adolescence. Anxiety and depressive symptoms at baseline were associated with an increased risk for reporting suicidal thoughts at follow-up. Early alcohol intoxication was closely associated with both frequent alcohol use and drug use at follow-up in both genders. The combination of health problems and alcohol intoxication in early adolescence was closely associated with more frequent drinking later in adolescence among girls. Boys with early anxiety/depression, pain/tension problems and early alcohol intoxication reported more often suicidal thoughts than girls with the same risk factors. Being overweight at the age 13-16 years increased the risk for suicidal thoughts among girls four years later. Conclusions: 80% of youth age 13-19 in North-Trøndelag had tried alcohol, and 29% reported more than 10 intoxicationsAttention problems, conduct problems, bodily pain and tension were positively associated with frequent intoxications in both genders. Anxiety and depressive problems were associated with frequent intoxications among girlsConduct problems in early adolescence more than doubles the risk for later regular alcohol use, drug use and suicidal thoughts. Attention problems increased the risk for frequent alcohol use and suicidal thoughts later in adolescence. Early anxiety and depressive symptoms were associated with an increased risk for suicidal thoughts late in adolescence in both genders, and for frequent alcohol use among girlsnb_NO
dc.languageengnb_NO
dc.relation.ispartofseriesDoktoravhandlinger ved NTNU, 1503-8181; 2013:135nb_NO
dc.titleSubstance use and health problems in adolescents: The Young-HUNT study, Nord-Trøndelag, Norwaynb_NO
dc.typeDoctoral thesisnb_NO
dc.contributor.departmentNorges teknisk-naturvitenskapelige universitet, Det medisinske fakultet, Institutt for samfunnsmedisinnb_NO
dc.description.degreePhD i samfunnsmedisinnb_NO
dc.description.degreePhD in Community Medicineen_GB


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