Table 5.
Range of possible values for the mother-to-child transmission rate (TR) of HIV-1 using two methods of calculation proposed by the Working Group on Mother-to-Child Transmission of HIV. Ghent, 1992. Kigali, Kampala and European Collaborative Study (ECS) datasets.
| Study | TR(%) | Minimum (s.d.*) | Intermediate (s.d.*) | Maximum (s.d.*) |
|---|---|---|---|---|
| Kigali | IM | – | 25.7% (3.51%) | – |
| DM | 21.1% (2.75%) | 24.7% (3.16%) | 35.8% (3.27%) | |
| Kampala | IM | – | 26.5% (2.51%) | – |
| DM | 18.7% (1.94%) | 24.2% (2.43%) | 41.5% (2.46%) | |
| ECS | DM | 10.0% (1.1%) | 12.2% (1.2%) | 28.3% (1.7%) |
IM, indirect method; DM, direct method (see text for definitions), s.d., standard deviation.