From: Improving response rate and quality of survey data with a scratch lottery ticket incentive
Incentive group | Control group | |
---|---|---|
Sample | 1 200 | 1 200 |
Sample after withdraws | 1 161 | 1 145 |
Pre-reminder response | 558 | 443 |
Pre-reminder response rate 1 | 48.1% | 38.7% |
Reminder response | 187 | 229 |
Reminder response rate 1 | 187/603 = 31.0% | 229/702 = 32.6% |
Total response | 745 | 672 |
Total response rate 1 | 64.2% | 58.7% |