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Table 3 Association between invitation mode and response rate, stratified by sex

From: Comparison of response rates on invitation mode of a web-based survey on influenza vaccine adverse events among healthcare workers: a pilot study

 

Odds Ratio

95% Confidence Interval

p-value

Male

Invitation mode

 Post

Referent

  

 Email

0.97

(0.56, 1.68)

0.90

Age groupa

 18–34 years

Referent

  

 35–49 years

6.87

(1.55, 30.4)

0.011

 50–64 years

10.43

(2.33, 46.7)

0.002

  ≥ 65 years

21.20

(4.50, 99.8)

0.000

Female

Invitation mode

 Post

Referent

  

 Email

1.77

(1.35, 2.32)

< 0.001

Age groupa

 18–34 years

Referent

  

 35–49 years

1.29

(0.83, 2.01)

0.26

 50–64 years

2.23

(1.44, 3.43)

< 0.001

  ≥ 65 years

3.19

(1.81, 5.64)

< 0.001

  1. a16 respondents had no data for age
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BMC Medical Research Methodology

ISSN: 1471-2288

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