Introduction
Although indoor tanning causes cancer, it remains relatively common
among adolescents. Little is known about indoor tanning prevalence and habits in
Canada, and even less about associated behaviours. This study explores the prevalence
of adolescent indoor tanning in Manitoba and its association with other demographic
characteristics and health behaviours.
Methods
We conducted secondary analyses of the 2012/13 Manitoba Youth
Health Survey data collected from Grade 7 to 12 students (n = 64 174) and examined
associations between indoor tanning (whether participants had ever used artificial
tanning equipment) and 25 variables. Variables with statistically significant associations
to indoor tanning were tested for collinearity and grouped based on strong associations.
For each group of highly associated variables, the variable with the greatest effect upon
indoor tanning was placed into the final logistic regression model. Separate analyses
were conducted for males and females to better understand sex-based differences, and
analyses were adjusted for age.
Results
Overall, 4% of male and 9% of female students reported indoor tanning, and
prevalence increased with age. Relationships between indoor tanning and other
variables were similar for male and female students. Binary logistic regression models
indicated that several variables significantly predicted indoor tanning, including having
part-time work, being physically active, engaging in various risk behaviours such as
driving after drinking for males and unplanned sex after alcohol/drugs for females,
experiencing someone say something bad about one’s body shape/size/appearance,
identifying as trans or with another gender, consuming creatine/other supplements
and, for females only, never/rarely using sun protection.
Conclusion
Indoor tanning among adolescents was associated with age, part-time work,
physical activity and many consumption behaviours and lifestyle risk factors. Though
legislation prohibiting adolescent indoor tanning is critical, health promotion to discourage
indoor tanning may be most beneficial if it also addresses these associated factors.