Table 1 Characteristics of the study population
Total cohort (N = 168) | Center #1 (N = 114) | Center #2 (N = 54) | |
|---|---|---|---|
Age | 68.8 ± 12.0 | 68.0 ± 11.9 | 71.4 ± 13.7 |
Male | 104 (61.9) | 71 (62.3) | 33 (61.1) |
Smoking status | |||
Active smoker | 91 (54.2) | 57 (50.0) | 34 (63.0) |
Former smoker | 73 (43.5) | 55 (48.2) | 18 (33.3) |
Never smoker | 4 (3.4) | 2 (1.8) | 2 (3.7) |
PFT results [n = 146 (86.9%)] | |||
GOLD stage I | 10 (6.8) | 5 (5.1) | 5 (10.6) |
GOLD stage II | 36 (24.7) | 26 (26.3) | 10 (21.3) |
GOLD stage III | 53 (36.3) | 37 (37.4) | 16 (34.0) |
GOLD stage IV | 47 (32.2) | 31 (31.3) | 16 (34.0) |
ERV for AECOPD | |||
Single ERV | 140 (83.3) | 91 (79.8) | 49 (90.7) |
Two or more ERV | 28 (16.7) | 23 (20.2) | 5 (9.3) |
ERV leading to hospital admission | 152 (90.5) | 103 (90.4) | 49 (90.7) |