BMC Public Health BioMed Central Research article Open Access Social correlates of cigarette smoking among Icelandic adolescents: A population-based cross-sectional study Alfgeir L Kristjansson*1,2, Inga D Sigfusdottir1, John P Allegrante1,3 and Asgeir R Helgason1,2,4 Address: 1Centre for Social Research and Analysis, School of Health and Education, Reykjavik University, Reykjavik, Iceland, 2Department of Oncology-Pathology, Karolinska Institute, Stockholm, Sweden, 3Department of Health and Behavior Studies, Teachers College, and Department of Sociomedical Sciences, Mailman School of Public Health, Columbia University, New York, USA and 4Centre of Public Health, Stockholm, Sweden Email: Alfgeir L Kristjansson* -
[email protected]; Inga D Sigfusdottir -
[email protected]; John P Allegrante -
[email protected]; Asgeir R Helgason -
[email protected] * Corresponding author Published: 7 March 2008 Received: 1 November 2007 Accepted: 7 March 2008 BMC Public Health 2008, 8:86 doi:10.1186/1471-2458-8-86 This article is available from: http://www.biomedcentral.com/1471-2458/8/86 © 2008 Kristjansson et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Abstract Background: Previous research has shown that between 80 and 90 percent of adult smokers report having started smoking before 18 years of age. Several studies have revealed that multiple social factors influence the likelihood of smoking during adolescence, the period during which the onset of smoking usually occurs. To better understand the social mechanisms that influence adolescent smoking, we analyzed the relationship and relative importance of a broad spectrum of social variables in adolescent smoking in Iceland, a Nordic country with high per-capita income.