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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.