Open Access
Table 1
Summary of patient characteristics.
| Overall | Low/average OC | High OC | p | |
|---|---|---|---|---|
| Age (years), median (IQR) | 64 (54–73) | 65 (54–73) | 62 (51–73) | P = 0.061 |
| Female gender, n (%) | 1150 (61.6%) | 845 (60.4%) | 305 (65%) | P = 0.077 |
| BMI (kg/m2), median (IQR) | 27.6 (24.3–32.0) | 27.5 (24.3–31.6) | 27.9 (24.2–33.1) | P = 0.232 |
| Preoperative Hb (g/L), median (IQR) | 134 (126–144) | 134 (126–145) | 133 (122–142) | P < 0.001 |
| Postoperative Hb (g/L), median (IQR) | 114 (103–124) | 114 (104–125) | 111 (99–121) | P < 0.001 |
| Postoperative Hb drop (g/L), median (IQR) | 20 (12–28) | 20 (12–28) | 21 (12–29) | P = 0.527 |
| ASA score, n (%): | ||||
| 1 | 207 (11.3%) | 161 (11.7%) | 46 (9.9%) | P < 0.001 |
| 2 | 1204 (65.5%) | 939 (68.3%) | 265 (57.2%) | |
| 3 | 408 (22.2%) | 266 (19.4%) | 142 (30.7%) | |
| 4 | 18 (1.0%) | 8 (0.6%) | 10 (2.2%) | |
| IMD quintile, n (%) | ||||
| Q1 | 282 (15.6%) | 211 (15.6%) | 71 (15.5%) | P = 0.974 |
| Q2 | 524 (28.9%) | 389 (28.8%) | 135 (29.5%) | |
| Q3 | 430 (23.7%) | 326 (24.1%) | 104 (22.7%) | |
| Q4 | 340 (18.8%) | 254 (18.8%) | 86 (18.8%) | |
| Q5 | 235 (13.0%) | 173 (12.8%) | 62 (13.5%) |
IQR, inter-quartile range; BMI, body mass index;- Hb, haemoglobin; ASA, American Society of Anaesthesiologists Score; IMD, Index of Multiple Deprivation. Bold indicates statistical significance (p < 0.05).
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