Postexposure prophylaxis v expectant treatment with oseltamivir at the time of developing influenza in household contacts (after treatment of all index influenza patients with oseltamivir)*
| Outcomes at 10 days | Household population | Post exposure prophylaxis | Expectant treatment | RRR (95% CI) | NNT (CI)† |
|---|---|---|---|---|---|
| *LCI = laboratory confirmed influenza. Other abbreviations defined in glossary; RRR, NNT, and CI calculated from data in article. | |||||
| †NNT refers to number of households needed to treat. | |||||
| Households with ⩾1 secondary patient with confirmed influenza | All | 7.4% | 19.9% | 63% (27 to 81) | 9 (5 to 23) |
| Index patient had LCI | 10.7% | 25.8% | 59% (18 to 80) | 7 (4 to 28) | |