Sites | Approximate Population Size | Approximate Pregnancies per year | Projected number of exposures per yeara | Sample Size over 1 years of recruitmentb | Ratio of exposed to unexposed | |
---|---|---|---|---|---|---|
Embryo sensitive period 6 weeks (exposure risk %) | Fully documented Exposed | Fully documented Unexposed | ||||
Kenya | 25,000 | 1085 | 3 % | 14 | 458 | 1:30 |
Burkina Faso | 30,000 | 1000 | 6 % | 42 | 658 | 1:16 |
Mozambique | 33,000 | 1000 | 6 % | 42 | 658 | 1:16 |
Overall | 88,000 | 3085 | 98 | 1768 |