表 2. The association between characteristics of perioperative hypothermia and allogeneic red blood cell transfusions by multivariable logistic regression models.

围术期低体温特征与异体红细胞输注的多因素 logistic回归模型

Model 1*				Model 2†
Variable	Adjusted OR (95% CI)	P		Variable	Adjusted OR (95% CI)	P
* Model 1: AUC=0.971 (95% CI: 0.955-0.987); † Model 2: AUC=0.971 (95% CI: 0.954-0.987). OR: odds ratio; CI: confidence interval.
Temperature nadir				AUC at 36 ℃
≥36 ℃	1.0 (Ref)			0 ℃·min	1.0 (Ref)
35.5-35.9 ℃	0.99 (0.51-1.96)	0.983		0.1-99.9 ℃·min	1.07 (0.55-2.09)	0.846
<35.5 ℃	2.47 (1.21-5.03)	0.013		≥100.0 ℃·min	2.24 (1.09-4.58)	0.028
P for trend	0.021			P for trend	0.020
Hypersplenism	2.87 (1.09-7.61)	0.034		Hypersplenism	2.67 (1.01-7.01)	0.047
Hemoglobin	0.33 (0.25-0.44)	<0.001		Hemoglobin	0.33 (0.25-0.44)	<0.001
ASA score	2.08 (1.17-3.71)	0.013		ASA score	2.01 (1.12-3.60)	0.018
Laparoscopy	0.22 (0.10-0.52)	0.001		Laparoscopy	0.23 (0.10-0.54)	0.001
Duration of surgery	1.39 (1.15-1.68)	0.001		Duration of surgery	1.37 (1.14-1.66)	0.001
Intraoperative blood loss	2.21 (1.81-2.70)	<0.001		Intraoperative blood loss	2.19 (1.79-2.68)	<0.001