ORs and 95% CIs of short message service (SMS) reminder on chlamydia re-screening rate in 1–4 months
| Model | OR (95% CIs) | p Value |
| Intervention period versus before period | ||
| Unadjusted | 1.38 (0.97 to 1.96) | 0.08 |
| Adjusted* | 1.44 (1.00 to 2.06) | 0.05 |
| Intervention SMS group versus before period | ||
| Unadjusted | 1.60 (1.1 to 2.50) | 0.04 |
| Adjusted* | 1.57 (1.01 to 2.46) | 0.05 |
| Intervention SMS group versus intervention non-SMS group | ||
| Unadjusted | 1.30 (0.80 to 2.09) | 0.30 |
| Adjusted* | 1.26 (0.78 to 2.06) | 0.35 |
↵* Adjusted for age, client status (new/existing), number of partners and anogenital symptoms.