Abstract
Aim
To investigate whether socio-economic status (SES) in childhood and school failure at 15 years of age predict illicit drug abuse in youth and young adulthood....
Findings
School failure was a strong predictor of illicit drug abuse with an HR of 5.87 (95% CI: 5.76–5.99) after adjustment for age and sex. Childhood SES was associated with illicit drug abuse later in life in a stepwise manner. The lowest stratum had a HR of 2.28 (95% CI: 2.20–2.37) compared with the highest stratum as the reference, when adjusted for other socio-demographic variables. In the fully adjusted model, the effect of SES was greatly attenuated to an HR of 1.23 (95% CI: 1.19–1.28) in the lowest SES category, while the effect of school failure remained high with an HR of 4.22 (95% CI: 4.13–4.31).
Conclusions
School failure and childhood socio-economic status predict illicit drug abuse independently in youth and young adults in Sweden.
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