Durability of intention-to-treat effects from short-term conditional economic incentives for clinic attendance provided to HIV treatment initiates for 6 months, Tanzania, 2015–2018
| N | Group estimate (SE) | Between-group difference (95% CI) | |||
| Control | Intervention | Unadjusted | Adjusted* | ||
| Retention in care† | |||||
| 24 months | 800 | 84.4% (0.034) | 86.5% (0.013) | 2.1 (−5.2 to 9.3) | 1.7 (−5.4 to 8.9) |
| 36 months | 800 | 77.8% (0.040) | 83.3% (0.015) | 5.6 (−2.7 to 13.8) | 5.6 (−2.6 to 13.9) |
| Mortality‡ | |||||
| 24 months | 800 | 7.7% (0.026) | 2.5% (0.006) | −5.2 (−10.5 to 0.1) | −5.7 (−11.3 to –0.1) |
| 36 months | 800 | 9.0% (0.029) | 4.7% (0.008) | −4.3 (−10.2 to 1.6) | −4.9 (−11.1 to 1.2) |
Data are estimates from logistic regression models adjusted for health facility where randomisation occurred.
*Adjusted for baseline health facility, age, sex and imbalanced baseline characteristics including language, occupation and WHO Clinical Stage.
†The proportion with documented HIV clinic attendance within 90 days of the last scheduled appointment as of the time of interest. Estimates were multiply imputed for 56 participants at 24 months and 63 participants at 36 months who could not be traced and whose last known status indicated a transfer to another facility.
‡The proportion deceased as of the time of interest. Estimates were multiply imputed for 90 participants at 24 months and 100 participants at 26 months who lacked confirmation of death or evidence of vitality (clinic visit on record or contact with tracing staff).