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

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	0.69^b	0.25^a	−0.14^a	0.13^a	0.65^b
Illicit drug use		1.00	0.47^b	0.01	0.27^b	0.77^b
Unprotected sex			1.00	0.01	0.08	0.51^b
BMI				1.00	−0.04	0.05
Sleep					1.00	0.30^b
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

ISSN: 1471-2458