Table 4 Collection of host trial primary outcome data at 24 months during home or clinic visit by factorial margins
No SMS notification for questionnaires (n = 702) | SMS notification for questionnaires (n = 692) | £10 voucher at 24-month visit (n = 695) | £10 voucher before 24-month visit (n = 699) | |
|---|---|---|---|---|
Host trial primary outcome data collected during home or clinic visit | 558 (79%) | 565 (82%) | 566 (81%) | 557 (80%) |
Adjusted risk difference (95% CI) | 2.4% (−1.8 – 6.5%) | −1.9% (−6.0 – 2.3%) | ||
Adjusted odds ratio (95% CI) | 1.15 (0.88 – 1.50) | 0.89 (0.69 – 1.17) |