Table 1.
Baseline and operative data
| Control (n = 121) | Restriction (n = 118) | |
|---|---|---|
| Age (years)* | 70 (30–94) | 70 (29–88) |
| Body mass index (kg/m2)* | 26 (17–39) | 26 (18–37) |
| Sex ratio (F : M) | 60 : 61 | 44 : 74 |
| ASA fitness grade | ||
| I | 28 (23·1) | 17 (14·4) |
| II | 70 (57·9) | 75 (63·6) |
| III | 23 (19·0) | 26 (22·0) |
| Preop. POSSUM score* | 18 (12–37) | 17 (11–39) |
| Smoking status | ||
| Current smoker | 11 (9·1) | 11 (9·3) |
| Ex-smoker (> 1 year) | 59 (48·8) | 62 (52·5) |
| Non-smoker | 51 (42·1) | 45 (38·1) |
| Alcohol consumption (units/week) | ||
| ≤ 21 | 109 (90·1) | 111 (94·1) |
| > 21 | 12 (9·9) | 7 (5·9) |
| Surgery | ||
| Oesophagectomy | 6 (5·0) | 11 (9·3) |
| Gastrectomy | 17 (14·0) | 12 (10·2) |
| Right colonic resection | 35 (28·9) | 34 (28·8) |
| Left colonic resection | 56 (46·3) | 50 (42·4) |
| Abdominoperineal resection | 6 (5·0) | 9 (7·6) |
| Palliative | 1 (0·8) | 2 (1·7) |
| Surgical approach | ||
| Laparoscopic | 19 (15·7) | 16 (13·6) |
| Open | 102 (84·3) | 102 (86·4) |
| Blood loss (ml)* | 403 (63–2500) | 400 (50–4245) |
| Duration of operation (min)* | 145 (40–285) | 161 (32–343) |
Values in parentheses are percentages unless indicated otherwise;
*
values are median (range). ASA, American Society of Anesthesiologists; POSSUM, Physiological and Operative Severity Score for the enUmeration of Mortality and morbidity.