FEV1 (%)LoVR (%)6MWD (m)SGRQ (units)RV (L)
 6 / 12 mo6 / 12 mo6 / 12 mo6 / 12 mo6 / 12 mo
<300 (n=22)14.3 / 8.8-54.0 / -51.631.7 / 26.7-13.7 / -11.6-0.413 / -0.330
≥300 (n=22)18.8 / 11.4-42.2 / -39.258.6 / 9.7-15.7 / -9.6-0.400 / -0.281
<350 (n=31)16.5 / 12.6-45.1 / -46.740.6 / 28.6-14.0 / -11.0-0.383 / -0.351
≥350 (n=13)17.5 / 5.5-51.9 / -41.658.7 / -12.7-16.3 / -9.6-0.453 / -0.193