Table 5. Factors associated with HIV infection in the bivariate logistic regression analysis.
| 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | Total | ||
|---|---|---|---|---|---|---|---|---|---|---|
| Characteristics | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | p-value |
| Number of individual characteristics | 411 | 494 | 554 | 555 | 630 | 594 | 623 | 582 | 4443 | |
| Sex | ||||||||||
| Male | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | |
| Female | 1.1 (0.6–1.9) | 1.8 (0.9–3.7) | 0.9 (0.5–1.9) | 0.5 (0.2–1.1) | 1.6 (0.8–3.3) | 0.07 (0.05–0.1) | 0.9 (0.4–1.7) | 0.5 (0.2–1.3) | 0.9 (0.5–1.9) | 0.370 |
| Age in weeks | ||||||||||
| ≤ 6 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | |
| 6–12 | 5.1 (1.0–24.8) | 0.7 (0.2–2.3) | 1.4 (0.3–5.6) | 3.4 (0.8–14.5) | 0.5 (0.1–1.6) | 3.4 (0.8–14.6) | 5.5 (1.1–26.1) | 2.2 (0.5–9.1) | 2.8 (0.6–12.3) | 0.245 |
| 12–24 | 10.1 (2.1–48.0) | 0.8 (0.2–2.9) | 4.5 (1.4–14.8) | 4.9 (1.1–21.0) | 1.3 (0.5–3.5) | 9.1 (2.4–34.3) | 11.3 (2.4–53.5) | 3.5 (0.8–15.2) | 5.7 (1.4–24.2) | 0.001 |
| 24–48 | 5.9 (1.1–31.4) | 3.9 (1.4–10.6) | 5.5 (1.6–18.3) | 9.8 (2.6–35.9) | 3.0 (1.3–6.9) | 15.4 (4.1–57.7) | 12.7 (2.0–79.3) | 5.3 (1.2–22.9) | 7.7 (1.9–32.9) | 0.012 |
| 48–72 | 5.6 (0.9–33.7) | 3.5 (0.8–15.2) | 11.6 (2.6–51.4) | 46.6 (11.0–196.5) | 19.5 (2.9–131.4) | 34.6 (6.8–175.8) | 33 (5.5–198.6) | 22.1 (4.4–114.7) | 0.019 | |
| > 72 | 22.5 (2.0–252.6) | 5.9 (0.5–64.3) | 13.2 (1.8–99.0) | 13.9 (1.4–138.6) | 0.021 | |||||
| Feeding mode | ||||||||||
| Formula feeding | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | |||||
| Mixed feeding | 1.25 (0.1–16.5) | 0.3 (0.1–1.6) | 17.3 (6.1–49.4) | 1.3 (0.3–5.5) | 1.8 (0.3–10.8) | 4.4 (1.4–16.8) | <0.001 | |||
| Exclusive breastfeeding | 0.2 (0.1–0.6) | 2.4 (0.9–6.7) | 1.2 (0.4–3.6) | 0.5 (0.1–1.9) | 1.1 (0.4–3.2) | <0.001 | ||||
| Breastfeeding on ART | 0.2 (0.03–1.2) | 0.08 (0.03–0.2) | 0.2 (0.06–0.5) | 0.1 (0.05–0.4) | 0.2 (0.04–0.6) | 0.084 | ||||
| Mother’s treatment status | ||||||||||
| Yes | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | |||
| No | 36.8 (2.8–477.7) | 3.2 (1.1–9.2) | 17.9 (8.1–39.7) | 10.9 (4.6–25.5) | 12.6 (5.8–27.4) | 10.2 (3.9–26.4) | 15.3 (4.4–101.0) | <0.001 | ||
| Child’s prophylaxis status | ||||||||||
| Yes | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | |||
| No | 62.2 (5.2–740.1) | 6.7 (2.7–16.8) | 9.9 (4.5–21.7) | 9.5 (3.9–23.1) | 8.0 (3.8–17.1) | 15.2 (5.7–40.4) | 18.6 (4.3–143.2) | <0.001 | ||
| Mother’s treatment-child’s prophylaxis status | ||||||||||
| Yes | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | |||
| No | 6.75 (0.7–67.4) | 3.3 (1.4–7.8) | 10.1 (4.4–23.0) | 8.9 (3.8–21.4) | 5.9 (2.8–12.2) | 11.5 (4.5–29.8) | 7.7 (2.9–26.9) | <0.001 | ||