Table 2 The effect of incentive timing on six-month follow-up survey completion outcomes in a prospective cohort study
| Â | Incentive timing | Â | Â | |
|---|---|---|---|---|
| Â | Before survey (N = 204) N (%) | After survey (N = 216) N (%) | Overall (N = 420) N (%) | P-value1 |
Response outcome: | ||||
 Follow-up survey completed |  |  |  | 0.61 |
  No | 65 (31.9) | 72 (33.3) | 137 (32.6) |  |
  Yes | 139 (68.1) | 144 (66.7) | 283 (67.4) |  |
 No. of calls required for contact |  |  |  | 0.22 |
  1 | 43 (39.1) | 62 (49.6) | 105 (44.7) |  |
  2 | 31 (28.2) | 26 (20.8) | 57 (24.3) |  |
  3 | 17 (15.5) | 15 (12.0) | 32 (13.6) |  |
  4 | 8 (7.3) | 8 (6.4) | 16 (6.8) |  |
  5 | 5 (4.5) | 4 (3.2) | 9 (3.8) |  |
  6 | 3 (2.7) | 7 (5.6) | 10 (4.3) |  |
  7 | 1 (0.9) | 2 (1.6) | 3 (1.3) |  |
  8 | 2 (1.8) | 0 (0.0) | 2 (0.9) |  |
  Unknown2 | 0 (0.0) | 1 (0.8) | 1 (0.4) |  |