Mean difference
Population
FEV1 (std.) - FEV1 (COPD-6) in ml (std. dev)
FVC (std.) - FVC (COPD-6) in ml (std. dev)
All
10.00 (18)
358 (420)
Healthy
-42.50 (25)
226 (291)
Asthma
30.58 (15)
354 (446)
COPD
-20.00 (15)
549 (414)