Outcome | Injectablec(n = 139) | Oralc(n = 106) | Injectable vs Oral | P Value |
---|---|---|---|---|
Relative risk (95% CI) | ||||
Retentiona | ||||
12 months | 123 (88.5%) | 60 (56.6%) | 1.56 (1.31, 1.87) | <0.0001d |
24 months | 77 (55.4%) | 60 (56.6%) | 0.98 (0.78, 1.22) | 0.851e |
Mean difference (95% CI) | ||||
Illicit heroin useb | ||||
12 months | 5.23 (3.43, 7.04) | 11.99 (9.91, 14.07) | -6.76 (-9.49, -4.02) | <0.0001f |
24 months | 9.78 (7.71, 11.85) | 11.48 (9.1, 13.87) | -1.7 (-4.87, 1.47) | 0.291g |