Table 1 Basic characteristics. Comparing subjects with normal lung function (NLF) vs. restrictive pattern and normal lung function vs. COPD. Analyses were performed among subjects “stable non-COPD” (NLF and restrictive pattern) and “stable COPD); at baseline and in 2005 (significant values in bold)
Categories | Variables | NLF n = 612 | Restrictive pattern n = 145 | Pc | COPD n = 576 | Pd |
|---|---|---|---|---|---|---|
Sex | ||||||
Women, n (%) | 292 (47.7) | 60 (41.4) | 0.17 | 243 (42.2) | 0.06 | |
Age | ||||||
Mean (SD) | 64.8 (11.0) | 68.6 (10.1) | <0.001 | 66.6 (10.6) | 0.004 | |
BMI | ||||||
Mean (SD) | 27.1 (4.0) | 28.4 (4.4) | 0.001 | 26.3 (4.1) | 0.001 | |
Underweight <20, n (%) | 6 (1.0) | 4 (2.8) | 22 (3.8) | |||
Normal 20–24.9, n (%) | 194 (31.7) | 27 (18.8) | 204 (35.4) | |||
Overweight 25–29.9, n (%) | 290 (47.4) | 68 (47.2) | 259 (45.0) | |||
Obese ≥30, n (%) | 122 (19.9) | 45 (31.3) | 91 (15.8) | |||
Smoking habits | ||||||
Pack years, mean (SD) | 6.5 (10.3) | 6.8 (11.3) | 0.74 | 17.0 (16.2) | <0.001 | |
Current smoker, n (%) | 71 (11.6) | 13 (9.0) | 207 (35.9) | |||
Ex smoker, n (%) | 234 (38.2) | 52 (35.9) | 241 (41.8) | |||
Non smoker, n (%) | 307 (50.2) | 80 (55.2) | 128 (22.2) | |||
Comorbiditiesa | ||||||
Diabetes, n (%) | 47 (7.7) | 26 (17.9) | <0.001 | 49 (8.5) | 0.60 | |
Hypertension, n (%) | 197 (32.2) | 69 (47.6) | 0.001 | 198 (34.4) | 0.42 | |
Angina pectoris, n (%) | 67 (10.9) | 27 (18.6) | 0.01 | 70 (12.2) | 0.521 | |
Myocardial infarction, n (%) | 14 (2.3) | 12 (8.3) | 0.001 | 32 (5.6) | 0.004 | |
CABG, n (%) | 18 (2.9) | 7 (4.8) | 0.25 | 10 (1.7) | 0.17 | |
PCI, n (%) | 8 (1.3) | 5 (3.4) | 0.07 | 8 (1.4) | 0.90 | |
Arrhythmias, n (%) | 44 (7.2) | 20 (13.8) | 0.01 | 46 (8.0) | 0.60 | |
Reported IHDb, n (%) | 77 (12.6) | 32 (22.1) | 0.005 | 93 (16.1) | 0.08 | |