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Table 4 Sensitivity analyses: Estimates of prevalence in target population under different assumptions about the ratio between prevalence in attendees and non-attendees. Rates of attendance: men 42.4 % and women 49.3 %. The Oslo Health Study 2000–2001.

From: The Oslo Health Study: The impact of self-selection in a large, population-based survey

Ratio between prevalence in non-attendees and attendees Diabetes Percent daily smokers Percent BMI ≥ 30 kg/m2 Percent HSCL score ≥ 1.85 Ratio between prevalence in non-attendees and attendees Percent reporting good or excellent health
Men      Men
1.00 3.8 27.7 14.8 8.3 1.00 80.5
1.10 4.0 29.3 15.7 8.8 0.90 81.4
1.25 4.3 31.7 16.9 9.5 0.75 74.5
1.50 4.9 35.7 19.1 10.7 0.67 70.8
2.00 6.0 43.7 23.3 13.1 0.50 62.9
Women      Women
1.00 2.6 27.8 13.5 13.2 1.00 76.2
1.10 2.7 29.2 14.2 13.9 0.90 72.3
1.25 2.9 31.3 15.2 14.9 0.75 66.5
1.50 3.3 34.8 16.9 16.5 0.67 63.5
2.00 3.9 41.9 20.3 19.9 0.50 56.9