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Table 3 Range of percentages of missing values

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

Theme Number of questions Range of missing* (%)
   Telephone Mail
Medicine 3 0 1.58 – 3.63
Smoking habits 1 0 0.73
Self-esteem 9 0 – 0.51 1.85 – 6.00
Well-being 11 0 – 0.13 0.92 – 6.00
Depression 7 0 – 0.13 2.04 – 4.88
Stress 15 0 – 0.13 2.04 – 4.75
  1. * Percentage of respondents not having answered a particular item.