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Table 6 Number (n) and percentage receiving disability benefit, association (odds ratio) with country of birth among attendees and all invited. The Oslo Health Study 2000–2001.

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

Country of birth * Attendees All invited
  n % OR (95% CI) n % OR (95% CI)
Men         
Age 40+45         
   Norway 58 2.7 Ref.   278 4.9 Ref.  
   Western 2 1.4 0.52 (0.13–2.12) 6 1.3 0.26 (0.12–0.60)
   Non-western 32 6.0 2.33 (1.50–3.62) 101 7.1 1.48 (1.17–1.88)
Age 59–60         
   Norway 230 12.8 Ref.   601 18.0 Ref.  
   Western 12 10.9 0.83 (0.45–1.54) 25 11.8 0.61 (0.40–0.94)
   Non-western 57 36.8 3.96 (2.77–5.64) 141 39.5 2.97 (2.36–3.74)
Women         
Age 40+45         
   Norway 123 4.4 Ref.   340 6.2 Ref.  
   Western 6 2.9 0.65 (0.28–1.49) 14 3.4 0.53 (0.31–0..91)
   Non-western 27 5.6 1.31 (0.85–2.01) 73 7.2 1.18 (0.91–1.53)
Age 59–60         
   Norway 431 21.3 Ref.   901 25.7 Ref.  
   Western 12 9.2 0.38 (0.21–0.69) 30 13.5 0.45 (0.31–0.67)
   Non-western 25 22.7 1.09 (0.69–1.72) 70 23.9 0.91 (0.69–1.20)
  1. * Adjusting for marital status, residential region and education gave similar results. Testing of interaction between attendance and country of birth in a logistic regression model including all men and women aged 40, 45, 59 and 60 years, and age and sex as covariates in addition to attendance and country of birth, gave p = 0.003.