“Observed” association among women with high risk sexual behaviours
| HIV infected | HIV uninfected | Total | |
|---|---|---|---|
| Stratum specific relative risk (RR) for women with high risk sexual behaviours = (76/929)/(26/611) = 1.92 (95% CI: 1.25 to 2.97). | |||
| Use of hormonal contraceptives | 76 | 853 | 929 |
| No use of hormonal contraceptives | 26 | 585 | 611 |