Associations between health-risk behaviours and non-condom use among 28,620 Danish students: a cross-sectional study.

Purpose: Investigations into the associations between health-risk behaviours and non-condom use are important for planning effective preventive interventions targeted sexually transmitted infections. To date, there are no such studies on the Danish general population. The aim of this study was to examine associations between health-risk behaviours (including daily smoking, frequent binge-drinking, cannabis use within the last month and illicit drug use) and non-condom use among Danish students.

Material And Method: Cross-sectional data from 28,620 sexually active students aged 15-25 years from the Danish National Youth Study 2014 were analysed using multilevel logistic regression.

Results: Health-risk behaviours (daily smoking, frequent binge-drinking, cannabis use within the last month and illicit drug use) were significantly associated with higher odds for non-condom use among Danish students, even after adjustment for age, gender, education, religion, and geographical region. The associations remained significant after adjusting for the remaining health-risk behaviours.

Conclusion: Overall, the study showed a clear association between health-risk behaviours and non-condom use among Danish students. The findings of this study have important implications for future planning of more targeted health promotion intervention programmes aimed to increase condom use among young people as a means to reduce sexually transmitted infections.