Table 1.
Preoperative characteristics of the study groups.
| Variable | Control Group | Elderly Group | p-Value |
|---|---|---|---|
| n (%) | n (%) | ||
| Total (n) | n = 375 | n = 135 | |
| Sex male/female | 339/36 | 122/13 | |
| Hypertension | 101 (26.9%) | 57 (42.2%) | 0.001 |
| COPD | 67 (17.9%) | 33 (24.4%) | 0.102 |
| Diabetes mellitus | 43 (11.5%) | 15 (11.1%) | 0.526 |
| IHD-CAD | 36 (9.6%) | 21 (15.6%) | 0.45 |
| AMI | 5 (1.3%) | 1 (0.7%) | 0.499 |
| Atrial fibrillation | 14 (3.7%) | 14 (10.4%) | 0.005 |
| Brain vascular disease | 7 (1.9%) | 6 (4.4%) | 0.999 |
| TBC | 7 (1.9%) | 4 (3.0%) | 0.327 |
| Malignancy other | 26 (6.9%) | 8 (5.9%) | 0.431 |
| Systemic autoimmune diseases | 6 (1.6%) | 3 (2.2%) | 0.44 |
| Preop. chemo-radiotherapy | 26 (6.9%) | 5 (3.7%) | 0.212 |
| Total number of comorbidities | 53.30% | 74.10% | 0.001 |
Abbreviations: COPD: chronic obstructive pulmonary disease, IHD-CAD: ischemic heart disease -coronary artery disease, AMI: acute myocardial infarction, TBC: tuberculosis.