Table 3.
Tetrachoric correlations between lifestyle risk factors included in the 2013–2014 Australian Child and Adolescent Survey of Mental Health and Wellbeing (n = 2314)
| Risky Alcohol Use | Illicit Drug Use | Unprotected Sex | BMI | Sleep | Smoking | |
|---|---|---|---|---|---|---|
| Alcohol use | 1.00 | 0.69b | 0.25a | −0.14a | 0.13a | 0.65b |
| Illicit drug use | 1.00 | 0.47b | 0.01 | 0.27b | 0.77b | |
| Unprotected sex | 1.00 | 0.01 | 0.08 | 0.51b | ||
| BMI | 1.00 | −0.04 | 0.05 | |||
| Sleep | 1.00 | 0.30b | ||||
| Smoking | 1.00 |
ap < 0.01; b p < 0.0001
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