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Table 4 Household response proportions stratified by type of incentive

From: The use of incentives in vulnerable populations for a telephone survey: a randomized controlled trial

 

Food Coupon #1

Food Coupon #2

Between Group Difference (95% Confidence Interval)

Response Rate

36.6% (n=142)

35.6% (n=135)

1.1% (−10.2%, 12.4%)

Cooperation Rate

45.6% (n=114)

43.6% (n=110)

2.0% (−11.0%, 15.0%)

Less Conservative Cooperation Rate

58.8% (n=114)

58.2% (n=110)

0.6% (−12.3%, 13.5%)

  1. n refers to the denominator. The response rate n is larger due to the inclusion of non-contacts.