Table 3 Effect measure variation according to analytical method used
Intervention group, n (%) | Control group, n (%) | RR (95% CI) | p Value | Intervention group, n (%) | Control group, n (%) | RR (95% CI) | p Value | |
|---|---|---|---|---|---|---|---|---|
4 months | 12 months | |||||||
Complete case analysis | 135/211 (64%) | 101/220 (46%) | 1.39 (1.17–1.66) | <0.001 | 84/169 (50%) | 68/159 (43%) | 1.16 (0.92–1.47) | 0.208 |
Counting participants LTFU as non-users | 135/249 (54%) | 101/251 (40%) | 1.35 (1.12–1.63) | 0.002 | 84/249 (34%) | 68/251 (27%) | 1.25 (0.95–1.63) | 0.106 |
Multiple imputation | 158/249 (63%) | 114/251 (45%) | 1.42 (1.19–1.69) | < 0.001 | 120/249 (48%) | 108/251 (43%) | 1.12 (0.89–1.40) | 0.349 |