Table 4 Viral suppression at different threshold disaggregated by duration of ART and level of service delivery
Duration of ART (months) | Viral load (copies/mL) | Overall, N = 2253 | Primary, N = 601 | Secondary, N = 188 | Tertiary, N = 1,464 | p-value | ||||
|---|---|---|---|---|---|---|---|---|---|---|
 N | %, 95%CI | N | %, 95%CI | N | %, 95%CI | N | %, 95%CI | |||
(≤ 3) | < 1000 | 165 | 84.2 (78.1, 88.8) | 56 | 87.5 (76.3, 94.1) | 16 | 80.0 (55.7, 93.4) | 93 | 83.0 (74.5, 89.2) | 0.6 |
|  | < 400 | 148 | 75.5 (68.8, 81.2) | 47 | 73.4 (60.7, 83.3) | 14 | 70.0 (45.7, 87.2) | 87 | 77.7 (68.6, 84.8) | 0.7 |
|  | < 200 | 136 | 69.4 (62.3, 75.7) | 43 | 67.2 (54.2, 78.1) | 12 | 60.0 (36.4, 80.0) | 81 | 72.3 (62.9, 80.2) | 0.5 |
|  | < 50 | 100 | 51.0 (43.8, 58.2) | 32 | 50.0 (38.1, 61.9) | 9 | 45.0 (23.8, 68.0) | 59 | 52.7 (43.1, 62.1) | 0.8 |
|  | < 20 | 84 | 42.9 (35.9, 50.1) | 24 | 37.5 (26.0, 50.5) | 7 | 35.0 (16.3, 59.1) | 53 | 47.3 (37.9, 56.9) | 0.3 |
(3,6] | < 1000 | 103 | 88.8 (81.3, 93.7) | 29 | 90.6 (73.8, 97.5) | 10 | 90.9 (57.1, 99.5) | 64 | 87.7 (77.4, 93.9) | > 0.9 |
|  | < 400 | 99 | 85.3 (77.3, 91.0) | 28 | 87.5 (70.1, 95.9) | 10 | 90.9 (57.1, 99.5) | 61 | 83.6 (72.7, 90.9) | > 0.9 |
|  | < 200 | 99 | 85.3 (77.3, 91.0) | 28 | 87.5 (70.1, 95.9) | 10 | 90.9 (57.1, 99.5) | 61 | 83.6 (72.7, 90.9) | > 0.9 |
|  | < 50 | 85 | 73.3 (64.1, 80.9) | 27 | 84.4 (66.5, 94.1) | 8 | 72.7 (39.3, 92.7) | 50 | 68.5 (56.4, 78.6) | 0.2 |
|  | < 20 | 74 | 63.8 (54.3, 72.4) | 22 | 68.8 (49.9, 83.3) | 7 | 63.6 (31.6, 87.6) | 45 | 61.6 (49.5, 72.6) | 0.8 |
(6,12] | < 1000 | 169 | 90.9 (85.5, 94.4) | 43 | 86.0 (72.6, 93.7) | 18 | 94.7 (71.9, 99.7) | 108 | 92.3 (85.5, 96.2) | 0.4 |
|  | < 400 | 169 | 90.9 (85.5, 94.4) | 43 | 86.0 (72.6, 93.7) | 18 | 94.7 (71.9, 99.7) | 108 | 92.3 (85.5, 96.2) | 0.4 |
|  | < 200 | 165 | 88.7 (83.0, 92.7) | 42 | 84.0 (70.3, 92.4) | 18 | 94.7 (71.9, 99.7) | 105 | 89.7 (82.4, 94.4) | 0.4 |
|  | < 50 | 148 | 79.6 (72.9, 85.0) | 38 | 76.0 (61.5, 86.5) | 17 | 89.5 (65.5, 98.2) | 93 | 79.5 (70.8, 86.2) | 0.5 |
|  | < 20 | 130 | 69.9 (62.7, 76.3) | 33 | 66.0 (51.1, 78.4) | 12 | 63.2 (38.6, 82.8) | 85 | 72.6 (63.5, 80.3) | 0.6 |
> 12 | < 1000 | 1,546 | 88.1(86.5, 89.6) | 383 | 84.2 (80.4, 87.3) | 128 | 92.8 (86.7, 96.3) | 1,035 | 89.1 (87.1, 90.8) | 0.005 |
|  | < 400 | 1,511 | 86.1 (84.4, 87.7) | 369 | 81.1 (77.1, 84.5) | 125 | 90.6 (84.1, 94.7) | 1,017 | 87.5 (85.5, 89.3) | 0.001 |
|  | < 200 | 1,478 | 84.2 (82.4, 85.9) | 364 | 80.0 (76.0, 83.5) | 122 | 88.4 (81.6, 93.0) | 992 | 85.4 (83.2, 87.3) | 0.011 |
|  | < 50 | 1,339 | 76.3 (74.2, 78.3) | 337 | 74.1 (69.7, 78.0) | 107 | 77.5 (69.5, 84.0) | 895 | 77.0 (74.5, 79.4) | 0.4 |
|  | < 20 | 1,229 | 70.0 (67.8, 72.2) | 319 | 70.1 (65.6, 74.2) | 98 | 71.0 (62.6, 78.3) | 812 | 69.9 (67.1, 72.5) | > 0.9 |