Table 1.
Baseline patient characteristics. Data presented as mean (standard deviation) or number and absolute percentages
| Usual Care group | Intervention group | p | |
|---|---|---|---|
| N = 100 | N = 100 | ||
| Sex; M:F | 26:74 | 32:68 | 0.350 |
| Age; years (SD, range) | 68.1 (9.7, 46–94) | 67.2 (10.9, 13–88) | 0.547 |
| Weight; kg (SD, range) | 81.6 (17.8, 46–130) | 83 (18.5, 50–137) | 0.566 |
| Body mass index; kg m−2 | 31.7 (6.4) | 31.4 (6.7) | 0.757 |
| American Society Anesthesiology Status | |||
| 1 | 4 | 3 | |
| 2 | 56 | 73 | 0.971 |
| 3 | 39 | 23 | |
| 4 | 1 | 1 | |
| Comorbidities | |||
| Cardiac disease | 18 | 17 | 0.852 |
| Hypertension | 65 | 62 | 0.660 |
| Diabetes mellitus | 22 | 16 | 0.280 |
| Peripheral vascular disease | 4 | 2 | 0.407 |
| Cerebrovascular disease | 6 | 1 | 0.054 |
| Pulmonary embolus | 1 | 0 | 0.316 |
| Deep venous thrombosis | 4 | 7 | 0.352 |
| Renal impairment | 5 | 11 | 0.118 |
| Active smoker | 10 | 5 | 0.180 |
| Previous smoker | 33 | 39 | 0.377 |
| Chronic obstructive airways disease | 20 | 21 | 0.861 |
| Other | 71 | 78 | 0.256 |
| Preoperative medications | |||
| Aspirin | 17 | 17 | 1.000 |
| Clopidogrel | 1 | 0 | 0.316 |
| Warfarin | 0 | 0 | 1.000 |
| Non steroidal anti-inflammatory drugs | 28 | 19 | 0.133 |