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Table 6 Response bias for each mode (Odds ratios and 95% CI)1

From: A randomised trial and economic evaluation of the effect of response mode on response rate, response bias, and item non-response in a survey of doctors

  age50-59 age60-69 Specialist Inner Regional Outer/
remote
Simultaneous mixed compared to Population    2.00
(1.39, 2.87)
  
Sequential mixed compared to Population 1.79
(1.16, 2.75)
1.67
(1.01, 2.78)
  1.49
(1.00, 2.22)
1.73
(1.01, 2.97)
Simultaneous mixed compared to online    2.42
(1.38, 4.26)
  
Sequential mixed compared to online   3.22
(1.26, 8.22)
  2.13
(1.02, 4.44)
 
  1. 1. Results from multinomial logit model. Only statistically significant results (P < 0.05) are reported. Full model results available from authors