Table 2 Proportion and rate of attrition and transfers per 100 person years: overall and by time on ART
Time on ART prior to data collection | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Overall (all adults) | 6 months on ART | 12 months on ART | 18 months on ART | |||||||||
1509 person years | 330 person years | 559 person years | 619 person years | |||||||||
1678 adults | 644 adults | 578 adults | 456 adults | |||||||||
Proportions: | n | Weighted % | 95% CI | n | Weighted % | 95% CI | n | Weighted % | 95% CI | n | Weighted % | 95% CI |
Attrition | 135 | 6.8 | [6.0 – 7.8] | 25 | 3.5 | [2.7 – 4.5] | 58 | 8.8 | [7.1 – 10.9] | 52 | 8.8 | [7.9 – 11.4] |
Recorded death | 48 | 2.9 | [2.4 – 3.5] | 13 | 1.6 | [1.1 – 2.3] | 16 | 2.9 | [2.0– 4.1] | 19 | 4.6 | [3.5 – 6.0] |
Lost to follow-up | 87 | 3.9 | [3.4 – 4.5] | 12 | 1.9 | [1.3 – 2.7] | 42 | 5.9 | [5.0 – 7.0] | 33 | 4.2 | [3.2 – 5.6] |
Transfer out | 99 | 5.5 | [4.5 – 6.8] | 34 | 6.1 | [4.5 – 8.2] | 26 | 3.6 | [2.5 – 5.3] | 39 | 6.9 | [4.8 – 9.8] |
Retained on ART | 1444 | 87.7 | [86.0 – 89.2] | 585 | 90.4 | [88.4 – 92.2] | 494 | 87.6 | [84.7 – 90.0] | 365 | 84.3 | [80.4 – 87.5] |
Rates: | No. | Weighted rate | 95% CI | No. | Weighted rate | 95% CI | No. | Weighted rate | 95% CI | No. | Weighted rate | 95% CI |
Attrition | 135 | 7.5 | [6.1 – 9.3] | 25 | 6.9 | [4.3 – 11.9] | 58 | 9.1 | [6.6 – 12.7] | 52 | 6.4 | [4.6 – 9.2] |
Recorded death | 48 | 3.2 | [2.3 – 4.5] | 13 | 3.2 | [1.7 – 6.9] | 16 | 2.9 | [1.6 – 5.6] | 19 | 3.3 | [2.0 – 5.9] |
Lost to follow-up | 87 | 4.3 | [3.3 – 5.6] | 12 | 3.7 | [1.8 – 8.8] | 42 | 6.1 | [4.2 – 9.2] | 33 | 3.1 | [2.0 – 4.9] |
Transfer out | 99 | 6.0 | [4.7 – 7.8] | 34 | 12.1 | [7.9 – 19.4] | 26 | 3.7 | [2.4 – 6.3] | 39 | 5.0 | [3.4 – 7.5] |
Retained on ART | 1444 | 95.7 | [92.8 – 98.7] | 585 | 179.5 | [174.5 – 184.6] | 494 | 90.3 | [88.1 – 92.6] | 365 | 61.1 | [59.5 – 62.7] |