Table 1.
Effect of combining indoor residual spraying (IRS) and long-lasting insecticide-treated nets (LLINs) interventions on malaria infection in São Tomé during the first half year of 2009
| Intervention | Malaria cases | Total cases | OR | 95% CI | P value |
|---|---|---|---|---|---|
| IRS only | 492 | 3775 | 1 | <0.001 | |
| Unprotected | 355 | 1605 | 1.895 | 1.629 - 2.204 | <0.001 |
| LLINs only | 136 | 1934 | 0.505 | 0.414 - 0.615 | <0.001 |
| IRS + LLINs | 95 | 5149 | 0.125 | 0.100 - 0.157 | <0.001 |
IRS: indoor residual spraying; LLINs: long lasting insecticide-treated nets;
OR: odds ratio; IC: confidence interval.