Table 4.

Risk factor comparison between NWAHCS and other comparable survey

	NWAHCS		SAMSS (NW Adelaide Study area)			P value
	n	%	n	%
Smoking status	Telephone		Telephone		0.07	0.79
Non or ex-smokers	3051	75.6	2202	75.9
Current smoker	985	24.4	700	24.1
Total	4036	100.0	2902	100.0
Alcohol risk	Self-complete		Telephone		15.71	<0.001
Non drinkers, no risk	2148	53.4	1550	53.4
Low risk	1630	40.5	1236	42.6
Intermediate to very high risk	244	6.1	116	4.0		*
Total	4023	100.0	2902	100.0
BMI
Self-reported	Telephone		Telephone		11.00	0.01
Underweight <18.50	14	1.0	65	2.4		*
Normal 18.50–24.99	589	43.0	1143	41.6
Overweight 25.00–29.99	505	36.8	964	35.1
Obese 30.00+	262	19.1	573	20.9
Total	1371	100.0	2746	100.0
Current high blood pressure
Self-reported	Telephone		Telephone		1.73	0.19
No/Don't know	1284	84.2	1292	85.8
Current HBP	242	15.8	213	14.2
Total	1525	100.0	1505	100.0
Current high cholesterol
Self-reported	Telephone		Telephone		3.11	0.08
No/Don't know	1337	87.7	1350	89.7
Current	188	12.3	155	10.3
Total	1525	100.0	1505	100.0
Physical activity
Self-reported	Self-complete		Telephone		7.19	0.06
Sedentary	1037	28.1	131	25.3
Low exercise level	1346	36.5	214	41.3
Moderate exercise level	891	24.1	129	24.8
High exercise level	417	11.3	45	8.6
					1.70	0.19
Sedentary	1037	28.1	131	25.3
Undertakes low to high levels of exercise	2655	71.9	387	74.7
Total	3691	100.0	519	100.0
Self-reported general health status	Self-complete		Telephone		0.51	0.48
Excellent, very good or good	3314	82.0	2363	81.4
Fair or poor	725	18.0	541	18.6
Total	4040	100.0	2904	100.0

* denotes the category was statistically significantly different compared with SAMSS using adjusted standardized residuals greater than 2.0 and less than -2.0 (χ² test)