Table 2 Distributions for participating in different numbers of waves of the survey
Group | |||||
|---|---|---|---|---|---|
Group 1 | Group 2 | Group 3 | Group 4 | Total | |
No. of waves in which pupils participated | no incentive | chance of winning 1 of twenty-five £20 Kingfisher vouchers | chance of winning one £500 Kingfisher voucher | definite £10 Kingfisher voucher on receipt of completed questionnaire | |
n (%) | n (%) | n (%) | n (%) | ||
Zero participation (eligible pupils who never participated in any wave) | 47 (3.2) | 34 (2.7) | 48 (3.2) | 143 (3.4) | 272 |
Participated in 1 wave only of the study | 340 (23.5) | 318 (25.1) | 405 (27.2) | 958 (22.7) | 2021 |
Participated in 2 waves of the study | 589 (40.7) | 533 (42.1) | 612 (41.0) | 1399 (33.1) | 3133 |
Participated in 3 waves of the study | 245 (16.9) | 200 (15.8) | 241 (16.2) | 781 (18.5) | 1467 |
Full participation in ALL 4 waves of the study | 227 (15.7) | 182 (14.4) | 185 (12.4) | 943 (22.3) | 1537 |
Total | 1448 | 1267 | 1491 | 4224 | 8430 |