Table 4.
Area under the curves for each lifestyle risk index and causes of adolescent disease burden in the 2013–2014 Australian Child and Adolescent Survey of Mental Health and Wellbeing (n = 2314)
| Risk indices | ||||||||
|---|---|---|---|---|---|---|---|---|
| Basic risk AUC (95% CI) | Basic risk + BMI AUC (95% CI) | Basic risk + Sleep AUC (95% CI) | Basic risk + Smoking AUC (95% CI) | Basic risk + BMI + Sleep AUC (95% CI) | Basic risk + BMI + Smoking AUC (95% CI) | Basic risk + Sleep + Smoking AUC (95% CI) | Basic risk + BMI + Sleep + Smoking AUC (95% CI) | |
| Major depression | 0.706 (0.671–0.742) | 0.702 (0.667–0.736) | 0.753 (0.718–0.787) c | 0.713 (0.678–0.748) | 0.739 (0.705–0.773) c | 0.709 (0.675–0.743) | 0.757 (0.723–0.791) c | 0.743 (0.709–0.776) c |
| Self-harm | 0.717 (0.684–0.751) | 0.710 (0.677–0.743) | 0.743 (0.711–0.776) b | 0.723 (0.690–0.757) | 0.729 (0.697–0.762) | 0.717 (0.684–0.750) | 0.747 (0.715–0.780) b | 0.736 (0.703–0.768) a |
| Suicide attempt | 0.765 (0.708–0.823) | 0.766 (0.708–0.824) | 0.826 (0.777–0.875) c | 0.791 (0.736–0.847) a | 0.820 (0.775–0.864) c | 0.798 (0.742–0.855) a | 0.838 (0.793–0.884) c | 0.836 (0.793–0.880) c |
| Severe psychological distress | 0.701 (0.655–0.747) | 0.693 (0.649–0.738) | 0.759 (0.717–0.802) c | 0.709 (0.663–0.754) | 0.737 (0.694–0.779) b | 0.701 (0.656–0.747) | 0.768 (0.727–0.810) c | 0.743 (0.702–0.785) b |
acontrast with basic risk index p < 0.05; b contrast with basic risk index p < 0.01; c contrast with basic risk index p < 0.001
NB: Risky alcohol use defined as 4 or more standard drinks in past 30 days; illicit drug use risk defined as any drug use in past 30 days; unprotected sex risk defined as no protection against pregnancy of sexually transmitted diseases the last time the respondent had sexual intercourse; BMI (body mass index) risk defined as less than 18.5 or greater than 30; sleep risk defined as less than 7 hours per day or more than 11 hours per day on average; smoking risk defined as cigarette smoking in the past 30 days