Table 1. FEV1 decline dependent on starting value
ΔFEV1 (mls)
Smoker/Ex-smoker
Never smoked
FEV1 <50%
n=15 -80 (-290 to 320)
N/A
FEV1 >50%
n=14 -150 (-480 to 310)
n=9 -130 (-550 to 210)