Table 3. Association of physical inactivity with incident obesity, South Australian Monitoring and Surveillance System (SAMSS) and North West Adelaide Health Study (NWAHS).

	SAMSS (n = 12873)		NWAHS (n = 1521)
	RR (95% CI)	P-value	RR (95% CI)	P-value
Basic model (unadjusted)	1.48 (1.14–1.90)	0.003	1.41 (1.03–1.93)	0.031
Model 1a	1.51 (1.17–1.95)	0.002	1.39 (1.02–1.92)	0.039
Model 2ab	1.43 (1.10–1.85)	0.007	1.42 (1.03–1.95)	0.030
Model 2bc	1.36 (1.05–1.77)	0.022	-	-
Model 3ad	1.30 (1.00–1.69)	0.050	1.32 (0.96–1.81)	0.093
Model 3be	1.24 (0.94–1.64)	0.125	-	-
Model 4af	1.26 (0.97–1.64)	0.083	1.27 (0.15–1.76)	0.920
Model 4bg	-	-	1.26 (0.91–1.73)	0.164

RR: relative risk. CI: Confidence Interval.

^aAdjusted for age and sex.

^bAdjusted by age, sex and chronic conditions (diabetes, asthma, COPD, cardiovascular disease and mental health).

^cAdjusted by age, sex and chronic conditions (diabetes, asthma, COPD, cardiovascular disease, mental health, arthritis [SAMSS only] and osteoporosis [SAMSS only]).

^dAdjusted for age, sex, chronic conditions and risk factors (smoking, alcohol, SF-1, blood pressure and cholesterol).

^eAdjusted for age, sex, chronic conditions and risk factors (smoking, alcohol, SF-1, blood pressure, cholesterol, vegetable consumption [SAMSS only], fruit consumption [SAMSS only], fast food consumption [SAMSS only] and psychological distress [SAMSS only].

^fAdjusted for age, sex, chronic conditions, risk factors and sociodemographics (SEIFA, country of birth, education, marital status, income, work status).

^gAdjusted for age, sex, chronic conditions, risk factors and sociodemographics (SEIFA, country of birth, education, marital status, income, work status and region [NWAHS only]).