Table 1.
Incentive group | Control group | |
---|---|---|
Sample |
1 200 |
1 200 |
Sample after withdraws |
1 161 |
1 145 |
Pre-reminder response |
558 |
443 |
Pre-reminder response rate1 |
48.1% |
38.7% |
Reminder response |
187 |
229 |
Reminder response rate1 |
187/603 = 31.0% |
229/702 = 32.6% |
Total response |
745 |
672 |
Total response rate1 | 64.2% | 58.7% |
1 Response rate after withdraws.