Table 3.
Demographic, clinical and surgical characteristics of patients undergoing head and neck surgery (N = 140).
| Variable | N (%) |
|---|---|
| Mean age (years)/standard deviation | 65.7 (12.5) |
| Intrinsic and extrinsic factors | |
| Cancer | 115 (82.7) |
| Diabetes | 41 (29.5) |
| Chronic obstructive pulmonary disease | 26 (18.7) |
| Obesity | 11 (7.9) |
| Liver cirrhosis | 6 (4.3) |
| Malnutrition | 6 (4.3) |
| Renal insufficiency | 4 (2.9) |
| Immunodeficiency | 1 (0.7) |
| Drainage | 54 (38.8) |
| Shaving | 7 (5.0) |
| Transfusion | 1 (0.7) |
| Surgery characteristics | |
| American Society of Anesthesiologists index | |
| ASA 1 | 5 (3.6) |
| ASA 2 | 74 (53.2) |
| ASA 3 | 56 (40.3) |
| ASA 4 | 4 (2.9) |
| Duration of surgery (min)/standard deviation | 144 (118) |
| Wound class | |
| Clean | 64 (45.7) |
| Clean-contaminated | 76 (54.3) |