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Table 4 Results of spirometric examination: subjects distribution in relation to severity of obstruction and method of obstruction assessment

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

13

FEV1 < 50 %

 

2

 

2

  1. a”False healthy” = Subjects with obstructive defect who thought to be healthy
  2. bPatients = Subjects with obstructive defect aware to be suffering from respiratory disease