Table 2.

Logistic regression of normal saline infusion volume in emergency department for acute kidney injury in patients with heat stroke.

Volume of normal saline infusion	Acute kidney injury
	Univariate		Adjust model I		Adjust model II
	OR (95% CI)	p	OR (95% CI)	p	OR (95% CI)	p
Per 1 L increase	1.46 (1.12, 1.92)	.005	1.39 (1.03, 1.89)	.033	2.51 (1.43, 4.40)	.001
≦2.5 L	Reference		Reference		Reference
>2.5 L	4.25 (1.62, 11.14)	.003	5.29 (1.66, 16.85)	.004	59.90 (7.55, 475.08)	<.001

NEWS: National Early Warning Score; OR: odds ratio; CI: confidence interval.

Adjust model I adjusted for sex, age, type of heat stroke, and creatinine. Adjust model II adjusted for institution, NEWS, creatinine, troponin I, lactic acid, chlorine, coronary heart disease, use of vasoactive drugs, and length of stay in emergency department.