23 6 dage (sidste behandlingsdag) øgedes FEV1 med 10, 8% i oseltamivirgruppen sammenlignet med 4, 7% i placebogruppen (p=0, 0148).
By day 6 (the last day of treatment) FEV1 had increased by 10.8% in the oseltamivir treated group compared to 4.7% on placebo (p = 0.0148) in this population.