Table 5.

Binary logistic regression analysis of risk factors for inadvertent intraoperative hypothermia before matching.

Variables	B	Exp(B)	p-Value	95% CI
Age	0.010	0.639	0.613	0.978 < CI < 1.039
Body mass index	−0.620	0.538	0.000	0.481 < CI < 0.601
Nasopharyngeal body temperature before anesthesia induction	−6.204	0.002	0.000	0.001 < CI < 0.007
Estradiol	−0.005	0.995	0.014	0.993 < CI < 0.998
Progesterone	−0.110	0.895	0.000	0.862 < CI < 0.930
Phase of the menstrual cycle	−0.149	0.62	0.167	0.697 < CI < 1.064
Flow rate of fresh air	0.899	2.458	0.000	1.736 < CI < 3.482
Duration of anesthesia	0.310	1.364	0.000	1.282 < CI < 1.451

CI, confidence interval.