Treatment effect of oseltamivir and zanamivir versus placebo in healthy adults, children, elderly and at-risk populations (ITT – pooled results).

aO = 150 mg oseltamivir daily during 5 days in adults, elderly; dosage adjusted to weight in children.bZ = 2×10 mg inhaled zanamivir daily during 5 days in adults, elderly; dosage adjusted to weight in children.cdifference in median hours in oseltamivir trials and difference in median days in zanamivir trials.dno pooling of results.eGRADE quality of evidence: high; moderate; low.ITT = intention-to-treat; NI = neuraminidase inhibitor; CI = confidence interval.