Table 2.

Univariate and multivariate analysis for predicting the occurrence of postoperative pleural effusion.

	Univariate				Multivariate
	OR	95% CI		P-value	OR	95% CI		P-value
Age	1.003	0.992	1.014	0.581
Sex	1.005	0.833	1.213	0.956
Body mass index	1.036	1.004	1.069	0.028	1.053	1.018	1.089	0.003
Anaesthetic time	0.999	0.998	1.000	0.017
Right hepatectomy	1.775	1.304	2.416	<0.001	1.521	1.095	2.114	0.012
Crystalloid (L)	0.949	0.883	1.019	0.151
Synthetic colloid (L)	1.405	0.921	2.141	0.114
Urine output (L)	0.774	0.637	0.941	0.010
Diuretics use	0.850	0.714	1.011	0.066
POD2ALB (g/dL)	0.393	0.301	0.512	<0.001	0.277	0.203	0.379	<0.001

Adjusted by all variables in Table 1.

Abbreviations: POD2ALB, lowest albumin level within postoperative day 2; OR, odds ratio; CI, confidence interval.