Table 1 Demographic details and spirometric results from all 1333 subjects
From: COPD and disease-specific health status in a working population
Total subjects | Age | Male | Cumulative smoking | Never smoker | Prior diagnosis | FEV1 | FEV1/FVC | ||
|---|---|---|---|---|---|---|---|---|---|
Number (%) | |||||||||
number | Years | number (%) | pack-years | number (%) | Asthma | COPD | % pred | % | |
All subjects | 1333 | 56.0 ± 8.2 | 871 (65.3%) | 17.0 ± 21.7 | 556 (41.7%) | 21 (1.6%) | 7 (0.5%) | 95.8 ± 14.8 | 78.4 ± 6.7 |
Non-COPD defined by fixed ratio | 1188 | 55.4 ± 8.1 | 731 (61.5%) | 14.3 ± 19.3 | 539 (45.4%) | 18 (1.5%) | 0 (0%) | 98.2 ± 13.0 | 80.1 ± 4.5 |
COPD defined by fixed ratio | 145 | 61.0 ± 7.7 | 140 (96.6%) | 38.4 ± 27.5 | 17 (11.7%) | 3 (2.1%) | 7 (4.8%) | 76.6 ± 15.1 | 64.6 ± 5.6 |
Non-COPD defined by LLN | 1266 | 55.7 ± 8.2 | 807 (63.7%) | 15.6 ± 20.1 | 548 (43.3%) | 19 (1.5%) | 1 (0.1%) | 97.3 ± 13.5 | 79.4 ± 5.2 |
COPD defined by LLN | 67 | 60.6 ± 7.2 | 64 (95.5%) | 43.0 ± 32.5 | 8 (11.9%) | 2 (3.0%) | 6 (8.9%) | 68.8 ± 13.0 | 60.3 ± 5.7 |
Healthy non-smoking subjects¶# | 512 | 56.2 ± 8.2 | 123 (24%) | 0.0 ± 0.1 | 495 (96.7%) | 8 (1.6%) | 0 (0%) | 104.5 ± 11.3 | 81.4 ± 4.4 |
Healthy smoking subjects¶* | 399 | 54.7 ± 8.0 | 373 (93.5%) | 29.1 ± 15.9 | 0 (0%) | 6 (1.5%) | 0 (0%) | 98.0 ± 9.0 | 79.7 ± 4.1 |
COPD/GOLD stageI | 60 | 60.8 ± 7.5 | 57 (95.0%) | 33.4 ± 23.3 | 10 (16.7%) | 1 (1.7%) | 0 (0%) | 90.4 ± 8.8 | 67.4 ± 2.6 |
COPD/GOLD stageII | 79 | 61.4 ± 8.0 | 78 (98.7%) | 42.1 ± 30.2 | 6 (7.6%) | 1 (1.3%) | 7 (8.9%) | 68.6 ± 7.7 | 63.6 ± 4.8 |