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Table 4 Risk factor comparison between NWAHCS and other comparable survey

From: Do people with risky behaviours participate in biomedical cohort studies?

  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   
  1. * 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)