| Total | Young | Elderly | P1 | SD | Non-SD | P2 |
---|---|---|---|---|---|---|---|
Patients (n) | 175 | 73 (41.7%) | 102 (58.3%) | – | 68 (38.9%) | 107 (61.1%) | – |
Age (y) | 53.4 ± 8.5 | 43.4 ± 8.4 | 59.4 ± 9.6 | 0.000 | 56.9 ± 10.8 | 49.0 ± 11.5 | 0.033 |
Male (n) | 148 (84.6%) | 56 | 92 | 0.015 | 57 | 91 | 0.827 |
Chronic diseases | |||||||
 Diabetes (n) | 29 (16.6%) | 5 | 24 | 0.003 | 19 | 10 | 0.001 |
 Hypertension (n) | 143 (81.7%) | 49 | 94 | 0.000 | 62 | 81 | 0.010 |
 Hyperlipidemia (n) | 33 (18.9%) | 6 | 27 | 0.002 | 17 | 16 | 0.098 |
 Coronary heart disease (n) | 10 (5.7%) | 2 | 8 | 0.152 | 6 | 4 | 0.158 |
 Renal dysfunctiona (n) | 40 (22.9%) | 12 | 28 | 0.087 | 21 | 19 | 0.044 |
 COPD (n) | 10 (5.7%) | 2 | 8 | 0.152 | 5 | 5 | 0.457 |
Drugs (n) | 143 (81.7%) | 55 | 88 | 0.065 | 62 | 81 | 0.010 |
Smoking (n) | 119 (68.0%) | 43 | 76 | 0.029 | 59 | 60 | 0.000 |