Table 1. Patient characteristics, surgical indications and procedures.
| Patient characteristics | Overall (n=888) | Normal weight (BMI 18.5–24.9 kg/m2) (n=361) | Overweight (BMI 25.0–29.9 kg/m2) (n=360) | Obese (BMI ≥30 kg/m2) (n=167) | P value |
|---|---|---|---|---|---|
| Sex (male) | 512 (57.6) | 175 (48.5) | 240 (66.7) | 97 (58.1) | <0.001 |
| Age (years) | 62.5 [54–69] | 62 [49–69] | 63 [56–69] | 62 [56–68] | 0.06 |
| BMI (kg/m2) | 26 [23–29] | 23 [21–24] | 27 [26–28] | 33 [31–35] | |
| Comorbidities | |||||
| Coronary artery disease | 54 (6.1) | 16 (4.4) | 28 (7.8) | 10 (6.0) | 0.17 |
| COPD | 34 (3.8) | 13 (3.6) | 17 (4.7) | 4 (2.4) | 0.42 |
| Diabetes | 108 (12.2) | 19 (5.3) | 51 (14.2) | 38 (22.8) | <0.001 |
| Hypertension | 267 (30.0) | 95 (26.3) | 105 (29.2) | 67 (40.1) | 0.005 |
| Neoadjuvant chemotherapy | 94 (10.6) | 41 (11.4) | 43 (11.9) | 10 (6.0) | 0.098 |
| Indications | 0.38 | ||||
| Liver metastases | 466 (52.5) | 186 (51.5) | 198 (55.0) | 82 (49.1) | |
| Colorectal | 366 (41.2) | 147 (40.7) | 154 (42.8) | 65 (38.9) | |
| Non-colorectal | 100 (11.3) | 39 (10.8) | 44 (12.2) | 17 (10.2) | |
| Cholangiocarcinoma | 158 (17.8) | 67 (18.6) | 62 (17.2) | 29 (17.4) | 0.88 |
| Hepatocellular carcinoma | 137 (15.4) | 60 (16.6) | 46 (12.8) | 31 (18.6) | 0.17 |
| Echinococcosis | 21 (2.4) | 3 (0.8) | 9 (2.5) | 9 (5.4) | 0.006 |
| Adenoma | 22 (2.5) | 4 (1.1) | 11 (3.1) | 7 (4.2) | 0.07 |
| Hemangioma | 33 (3.7) | 11 (3.0) | 17 (4.7) | 5 (3.0) | 0.42 |
| FNH | 23 (2.6) | 14 (3.9) | 8 (2.2) | 1 (0.6) | 0.07 |
| Others | 28 (3.2) | 16 (0.04) | 9 (0.02) | 3 (0.01) | 0.89 |
| Type of liver resection | |||||
| Minor LR (<3 segments) | 455 (51.2) | 179 (49.6) | 177 (49.2) | 99 (59.3) | 0.07 |
| Major LR (≥3 segments) | 433 (48.8) | 182 (50.4) | 183 (50.8) | 68 (40.7) | |
Data are presented as n (%) or median [IQR]. IQR, interquartile range; BMI, body mass index; COPD, chronic obstructive pulmonary disease; FNH, focal nodular hyperplasia; LR, liver resection.