Risk factors and predictive modeling of early postoperative liver function abnormalities

Table 1 General information of the normal and abnormal groups, n (%)

Parameter	Normal group (n = 3553)	Abnormal group (n = 167)	Statistic	P value
Gender, male	1037 (29.19)	88 (52.69)	χ² = 41.78	< 0.01
Age, year	56.00 (47.00, 66.00)	59.00 (50.00, 67.00)	Z = -1.51	0.13
Weight, kg	58.00 (52.00, 65.00)	59.00 (52.35, 66.50)	Z = -0.93	0.35
BMI, kg/m2	22.89 (20.62, 25.33)	22.66 (20.37, 25.56)	Z = -0.31	0.76
Past medical history
High blood pressure	1126 (31.69)	51 (30.54)	χ² = 0.10	0.75
Diabetes	2487 (70.00)	116 (69.46)	χ² = 0.02	0.88
Coronary heart disease	1480 (41.65)	72 (43.11)	χ² = 0.14	0.71
Cerebral infarction	90 (2.53)	2 (1.20)	χ² = 0.69	0.41
Viral hepatitis	211 (5.94)	13 (7.78)	χ² = 0.96	0.33
Chronic hepatitis	17 (0.48)	1 (0.60)	-	0.56
Liver cirrhosis	12 (0.34)	0 (0.00)	-	1.00
Hyperlipidemia	140 (3.94)	10 (5.99)	χ² = 1.73	0.19
COPD	11 (0.31)	1 (0.60)	-	0.42
Chronic kidney disease	91 (2.56)	6 (3.59)	χ² = 0.32	0.57

BMI: Body mass index; COPD: Chronic obstructive pulmonary disease.