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Table 2 Response rates throughout the four measurement waves (T1-T4) of the TRAILS study for participants who were easy and hard-to-recruit at the first wave

From: Benefits of extensive recruitment effort persist during follow-ups and are consistent across age group and survey method. The TRAILS study

 

T1

T2

T3

T4

 

n

n

%

n

%

n

%

T1-easy-to-recruit

2,085

2,015

96.6

1,730

83.0

1,792

85.9

T1-hard-to-recruit

145

134

92.4

86

59.3

89

61.4

  

OR

95% CI

OR

95% CI

OR

95% CI

T1-hard-to-recruita

 

0.42*

0.22 – 0.82

0.30*

0.21 – 0.43

0.26*

0.18 – 0.37

  1. *p < .05; Odds ratios (OR) and 95% confidence intervals (CI) from single binary logistic regression analyses predicting response.
  2. a T1-easy-to-recruit is the reference category; recruitment status is the independent variable.
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BMC Medical Research Methodology

ISSN: 1471-2288

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