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Table 5 Odds ratios for more extreme responses in telephone interviews

From: A randomized trial of mailed questionnaires versus telephone interviews: Response patterns in a survey

Theme Number of mode-sensitive* items of total number of items Median (and maximum)odds ratio among mode-sensitive items
Health behaviour   
Medicine 0/3 -
Smoking habits 0/1 -
Self assessments   
Self-esteem 8/9 1.57 (2.57)
Well-being 9/11 1.55 (2.20)
Depression 3/6 2.12 (2.21)
Stress 12/15 1.67 (2.44)
  1. * Items where the hypothesis of identical distributions among telephone respondents and respondents to mailed questionnaires was rejected.