Table 3.
Multiple log binomial regression examining the association of current partners’ age and HIV infection among pregnant women attending antenatal clinics in rural KwaZulu-Natal, 2003–2013. Unadjusted and adjusted relative risk (RR), 95% confidence intervals (CI) for prevalent HIV infection
| Age group | Partner’s age group | HIV prevalence % (95%CI) | Unadjusted | Adjusted* | ||
|---|---|---|---|---|---|---|
| RR (95%CI) | p-value | ARR (95%CI) | p-value | |||
| <20 | <20 | 10.8 (7.8–13.7) | Reference | |||
| 20–24 | 20.4 (17.5–23.3) | 1.9 (1.4–2.6) | <0.001 | 1.7 (1.3–2.4) | 0.001 | |
| ≥25 | 32.9 (25.3–40.4) | 3.1 (2.1–4.4) | <0.001 | 3.0 (2.1–4.3) | <0.001 | |
|
|
||||||
| 20–24 | <20 | 10.0 (0.0 –23.1) | 0.3 (0.1–1.1) | 0.062 | 0.3 (0.1–1.2) | 0.097 |
| 20–24 | 35.1 (31.0–39.2) | Reference | ||||
| ≥25 | 46.6 (42.9–50.3) | 1.3 (1.2–1.5) | <0.001 | 1.3 (1.2–1.6) | <0.001 | |
|
|
||||||
| ≥25 | <20 | 0 | NE | |||
| 20–24 | 57.7 (38.7–76.7) | 1.1 (0.8–1.5) | 0.714 | 1.0 (0.7–1.4) | 0.869 | |
| ≥25 | 54.2 (51.8–56.7) | Reference | ||||
*
Adjusted for clinic and previous pregnancy
NE: Non estimable