Table 1 Characteristics of the subjects without AFL or dyspnoea on exertion at enrolment (N = 5865).
From: Development of airflow limitation, dyspnoea, and both in the general population: the Nagahama study
Total | Normal respiratory function* | Subclinical respiratory dysfunction | ||
|---|---|---|---|---|
FEV1/FVC < LLN | %FEV1 < 80% | |||
N | 5865 | 5555 | 57 | 256 |
Age, year | 59 (± 9) | 59 (± 9) | 49 (± 8)† | 62 (± 9)‡ |
Female, N (%) | 3887 (66) | 3699 (67) | 46 (81)† | 145 (57)‡ |
Height, cm | 159 (± 8) | 159 (± 8) | 160 (± 8) | 160 (± 9) |
Weight, kg | 57 (± 10) | 57 (± 10) | 55 (± 10)† | 59 (± 13) |
BMI, kg/m2 | 22.5 (± 3.1) | 22.5 (± 3.1) | 21.4 (± 2.6)† | 23.0 (± 3.8) |
Smoking status, N (%) | 1831 (31) | 1713 (31) | 13 (23) | 105 (41)‡ |
Current | 668 (11) | 616 (11) | 10 (18) | 42 (16)‡ |
Former | 1163 (20) | 1097 (20) | 3 (5)† | 63 (25)‡ |
Pack-years among smokers | 12 (± 20) | 11 (± 19) | 24 (± 23)† | 17 (± 25) |
Pulmonary function test | ||||
%FEV1, % | 104 (± 14) | 106 (± 13) | 98 (± 14)† | 73 (± 8)‡ |
%FVC, % | 101 (± 14) | 102 (± 13) | 111 (± 16)† | 73 (± 9)‡ |
FEV1/FVC | 0. 82 (± 0.05) | 0. 82 (± 0.05) | 0.72 (± 0.01)† | 0.80 (± 0.06)‡ |
Comorbidities, N (%) | ||||
Hypertension | 1395 (24) | 1318 (24) | 5 (9)† | 72 (28) |
Diabetes | 388 (7) | 364 (7) | 1 (2) | 28 (11)‡ |
Cardiovascular disease | 264 (5) | 250 (5) | 0 (0) | 14 (5) |
