Journal of Public Health Advance Access published online on May 8, 2008
Journal of Public Health, doi:10.1093/pubmed/fdn037
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Overweight and obesity among adolescents in Norway: cultural and socio-economic differences
Else-Karin Grøholt, Researcher1
Hein Stigum, Senior Researcher2
Rannveig Nordhagen, Senior Researcher3
1 Department of Health Statistics, Division of Epidemiology, Norwegian Institute of Public Health, PO Box 4404, Nydalen, 0403 Oslo, Norway
2 Department of Chronic Diseases, Division of Epidemiology, Norwegian Institute of Public Health, PO Box 4404, Nydalen, 0403 Oslo, Norway
3 Department of Genes and Environment, Division of Epidemiology, Norwegian Institute of Public Health, PO Box 4404, Nydalen, 0403 Oslo, Norway
Address correspondence to Else-Karin Grøholt, E-mail: else-karin.groholt{at}fhi.no
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Background The aim of this study was to investigate overweight and obesity among a representative population of 15 966 Norwegian 15–16 year olds and the associations with different socio-economic and cultural risk factors.
Methods Self-reported data were obtained from school-based surveys in six counties during 2000–04. Overweight and obesity were calculated using Cole's index.
Results The prevalence of overweight and obesity were 11.8% and 2.4%, respectively, higher among boys. Logistic regression analyses revealed that adolescents in Nordland, Troms and Finnmark (the northernmost counties) were 70–90% more likely to be overweight and obese compared with adolescents in Oslo (the capital and southernmost county) (OR for overweight in Finnmark = 1.7, CI = 1.3, 2.3). Lower educational plans and poor family economy were both significantly associated with overweight and obesity. So was physical inactivity (OR = 1.2, CI = 1.1, 1.3 and OR = 1.6, CI = 1.2, 2.1, respectively). Eating breakfast was positively associated with not being overweight/obese.
Conclusion Overweight and obesity is associated with socio-economic factors and with factors related to food habits and nutrition, suggesting important areas for prevention.
Keywords: epidemiology, obesity, public health