Table 2.
Baseline characteristics of COPD and non-COPD patients
| COPD n=36 | Non-COPD n=100 | p-values | |
|---|---|---|---|
| Age (years), mean ± SD | 72.4±8.6 | 68.9±12.0 | 0.114 |
| Male sex, n (%) | 20 (55.6) | 71 (71.0) | 0.091 |
| BMI (kg/m2), mean ± SD | 27.3±5.2 | 27.3±4.5 | 0.978 |
| AOD, n (%) | 36 (100.0) | 100 (100.0) | |
| CAD, n (%) | 26 (72.2) | 73 (73.0) | 0.430 |
| with <50% stenosis, n (%) | 22 (61.1) | 68 (68.0) | |
| with ≥50% stenosis, n (%) | 4 (11.1) | 5 (5.0) | |
| PAD, n (%) | 34 (94.4) | 91 (91.0) | 0.516 |
| Fontaine 1, n (%) | 20 (55.6) | 70 (70.0) | |
| Fontaine 2a, n (%) | 6 (16.7) | 7 (7.0) | |
| Fontaine 2b, n (%) | 6 (16.7) | 13 (13.0) | |
| Fontaine 3, n (%) | 1 (2.8) | 0 (0.0) | |
| Fontaine 4, n (%) | 1 (2.8) | 1 (1.0) | |
| Media sclerosis, n (%) | 5 (13.9) | 19 (19.0) | 0.490 |
| CHD, n (%) | 13 (36.1) | 35 (35.0) | 0.905 |
| Arterial hypertension, n (%) | 29 (80.6) | 86 (86.0) | 0.438 |
| Diabetes mellitus, n (%) | 12 (33.3) | 17 (17.0) | 0.040 |
| Hypercholesterolemia, n (%) | 27 (75.0) | 69 (69.0) | 0.498 |
| Nicotine abuse | 0.218 | ||
| never smoker, n (%) | 10 (27.8) | 35 (35.0) | |
| current smoker, n (%) | 3 (8.3) | 17 (17.0) | |
| former smoker, n (%) | 23 (63.9) | 48 (48.0) | |
| pack-years, mean ± SD | 37.0±45.1 | 18.4±26.8 | 0.004 |
| Autoimmune diseases, n (%) | 9 (25.0) | 23 (23.0) | 0.808 |
| Self-referred COPD, n (%) | 13 (36.1) | 4 (4.0) | <0.001 |
| Self-referred asthma, n (%) | 1 (2.8) | 4 (4.0) | 0.738 |
| Allergy, n (%) | 8 (22.2) | 23 (23.0) | 0.924 |
| Inhalation therapy of bronchial disorders, n (%) | 14 (38.9) | 9 (9.0) | <0.001 |
| Oral cortisone, n (%) | 5 (13.9) | 6 (6.0) | 0.137 |
Notes: Data are presented as a mean ± SD or n (%). p<0.05= significant.
Abbreviations: AOD, arterial occlusive disease; BMI, body mass index; CAD, cerebral artery disease; CHD, coronary heart disease; PAD, peripheral artery disease.