Table 3.

Univariate logistic regression analysis of risk factors influencing postoperative hypoalbuminemia in the patients underwent craniotomy for brain tumor.

Variables	B	SE	Wald	P value	Odds ratio (95% CI)
BMI	− 0.141	0.056	6.354	0.012	0.869 (0.779–0.969)
Intraoperative blood loss	0.002	0.001	4.295	0.038	1.002 (1.000–1.004)
Intraoperative total input	0.001	0.000	15.191	< 0.001	1.001 (1.000–1.001)
Intraoperative total urine output	0.001	0.000	17.178	< 0.001	0.001 (1.001–1.002)
Operation time	0.008	0.002	16.073	0.000	1.009 (1.004–1.013)
Red blood cells	− 0.640	0.324	3.915	0.048	0.527 (0.280–0.994)
PT	0.613	0.292	4.424	0.035	1.846 (1.043–3.269)
Preoperative albumin	− 0.098	0.047	4.355	0.037	0.906 (0.826–0.994)
Preoperative globulin	0.109	0.047	5.470	0.019	1.115 (1.018–1.221)
Preoperative albumin/globulin ratio	− 2.400	0.700	11.761	0.001	0.091 (0.023–0.358)

BMI Body Mass Index, B regression coefficient, SE standard errors of regression coefficient, PT prothrombin time.