Table 3.
Risk factors of included studies.
| Factor | Note | No. of studies that reported this factor | Meta-analysis | Risk | 95% CI | p |
|---|---|---|---|---|---|---|
| Age | Years | 3 | Yes | WMD = 1.9 | (−1.2, 5.8) | 0.229 |
| Gender | Male/female | 4 | Yes | OR = 1.258 | (0.922, 1.717) | 0.148 |
| ASA ≥ 3 | 3 | Yes | OR = 1.570 | (1.015, 2.429) | 0.043 | |
| Major resection | 3 | Yes | OR = 2.028 | (1.014, 4.059) | 0.046 | |
| Extended resection | 1 | No | OR = 4.079 | (2. 177, 7.642) | < 0.0001 | |
| Current smoker | 1 | No | RR = 2.21 | (1. 10, 4.46) | 0.027 | |
| High ALT/GPT | More than 67 IU/L in men and more than 55 IU/L in women | 1 | No | RR = 3.55 | (1.68, 7.49) | 0.001 |
| Blood loss during operation | Grams | 2 | No | WMD = 505.0 | (354.2, 655.9) | < 0.0001 |
| Blood transfusion | 2 | No | OR = 2.042 | (0.429, 9.719) | 0.370 | |
| Operation time | Minutes | 2 | No | WMD = 89.3 | (−13. 1, 191.7) | 0.087 |
| Chemotherapy | 2 | No | OR = 1.182 | (0.814, 1.715) | 0.879 | |
| BMI | 1 | No | OR = 0.997 | (0.930, 1.068) | 0.924 | |
| Low albumin | ≤30 g/L | 1 | No | OR = 2.420 | (0.989, 5.922) | 0.053 |
| High bilirubin | ≥20 μmol/L | 1 | No | OR = 1.850 | (0.931, 3.676) | 0.079 |
| Pringle maneuvre | 1 | No | OR = 1.559 | (0.835, 2.911) | 0.163 | |
| Caudate lobe resection | 1 | No | OR = 0.569 | (0. 131, 2.468) | 0.759 | |
| Repeat hepatectomy | 1 | No | OR = 1.439 | (0.716, 3. 111) | 0.285 | |
| Central resection | 1 | No | OR = 1.352 | (0.381,4.795) | 0.640 | |
| Thoracotomy | 1 | No | OR = 1.27 | (0.37,5.91) | 0.721 | |
| Hepaticojejunostomy | 1 | No | OR = 1.34 | (0.45,3.97) | 0.596 |