From: Most Italians attending a congress on health of elderly people do not know and do not recognize respiratory diseases
FEV1/FVC < LLN “False healthy”a
FEV1/FVC < LLN Patientsb
FEV1/FVC < 0.70 “False healthy”a
FEV1/FVC < 0.70 Patientsb
FEV1 ≥ 80 %
45
14
52
22
FEV1 < 80 ≥ 50 %
13
11
15
FEV1 < 50 %
2