| | SMS group | Control group | OR (95% CI) | p value |
|---|
| Retention, n (%) |
| At 8 weeks | 45 (100) | 46 (93.9) | 1.1 (0.8–1.0) | 0.092 |
| At 3 months | 44 (97.8) | 43 (87.8) | 1.1 (0.9–1.2) | 0.065 |
| At 6 months | 44 (97.8) | 39 (79.6) | 1.2 (1.1–1.5) | 0.006 |
- SMS short message service, OR odds ratio, CI confidence interval