Study | ||||||||
---|---|---|---|---|---|---|---|---|
Overall | IL | KY | NC | NE | OH | OR | WI | |
Personal network size used as a seed selection criterion | 1/7 | No | Yesa | No | No | No | No | No |
Total number of seeds | 562 | 53 | 48 | 50 | 51 | 45 | 42 | 273 |
Non-generative seeds | 251 (45%) | 38 (72%) | 24 (50%) | 13 (26%) | 13 (25%) | 23 (51%) | 18 (43%) | 122 (45%) |
Seeds with ≥5 waves | 46 (8%) | 1 (2%) | 4 (8%) | 6 (12%) | 11 (22%) | 3 (7%) | 4 (10%) | 17 (6%) |
Wave size range, median (range) | 1 (0-14) | 0 (0-5) | 0.5 (0-13) | 1 (0-11) | 1 (0-14) | 0 (0-13) | 1 (0-7) | 1 (0-11) |
Coupons per recruiterb | 3-7 | 6 | 3 | 3-4 | 3-7 | 4-5 | 3-4 | 3-5 |
Incentive for participationc | $20-40 | $40 for completing the survey | $45 for completing the survey and rapid testing | $40 for completing the survey | $20 for completing the survey and rapid testing | $25 for completing the survey | $25 for completing the survey | $20 for completing the survey and rapid testing |
Incentive for recruitment | $10-20 | $20 per eligible referral | $10 per eligible referral who enrolled | $20 per eligible referral who enrolled | $10 per eligible referral who completed all study activities | $10 per eligible referral | $10 per eligible referral | $10 per eligible referral who enrolled |
Duplicate participants identified | 20 | 2 | 3 | 0 | 0 | 3 | 1 | 14 |
Downstream recruits of duplicates | 31 | 7 | 0 | 0 | 0 | 6 | 0 | 18 |