Skip to main content

Table 4 Percentage of respondents answering "don't know"

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

Item

Don't-knows (%)

 

Telephone

Mail

I seem to get sick a little easier than other people

3.33

10.22

I am as healthy as anybody I know

2.69

13.90

I expect my health to get worse

4.36

23.76

My health is excellent

2.05

10.39