Skip to main content

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)

From: Lifestyle risk indices in adolescence and their relationships to adolescent disease burden: findings from an Australian national survey

  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
  1. ap < 0.01; b p < 0.0001
  2. 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