| DBS result | COR (95% CI) | P value | ||
| Negative | Positive | |||
| Age at DBS tested | ||||
| At 6 months | 104 | 6 | 1 | 0.002 |
| After 6 months | 286 | 38 | 2.3 (1.1, 4.9)* | |
| Mothers’ age | ||||
| 15 - 24 | 83 | 12 | 1 | 0.761 |
| 25 - 34 | 234 | 26 | 1.7 (0.6, 4.6) | |
| 35+ | 73 | 6 | 1.3 (0.5, 3.4) | |
| Maternal education | ||||
| Unable read & write | 211 | 40 | 8.4 (2.9, 14.8)* | 0.013 |
| Able to read & write | 179 | 4 | 1 | |
| Infant ARV prophylaxis | ||||
| Yes | 337 | 14 | 1 | 0.0001 |
| No | 53 | 30 | 10.6 (3.5, 13.8)* | |
| Place of delivery | ||||
| Health facility | 314 | 14 | 1 | 0.0001 |
| Home | 76 | 30 | 8.8 (4.4, 17.5)* | |
| Feeding practice | ||||
| EBF | 374 | 28 | 1 | 0.0001 |
| MF | 16 | 16 | 12.4 (6.0, 18.1)* | |
| Enrollment | ||||
| Yes | 370 | 32 | 1 | 0.004 |
| No | 20 | 12 | 6.9 (3.1, 15.4)* | |
| Mothers’ treatment | ||||
| ART | 245 | 10 | 1 | 0.0001 |
| ARV prophylaxis | 110 | 12 | 2.6 (1.1, 6.3)* | |
| None | 15 | 10 | 16.0 (6.8, 24.9)* | |
| Duration of treatment | ||||
| >4 weeks | 330 | 8 | 1 | 0.0001 |
| ≤4 weeks | 25 | 14 | 23 (8.8, 39)* | |