Table 3.

The results of the two-piece wise linear regression model.

RDW/ALB ratio	Inflection point	HR(95%CI)	P value
In-hospital mortality	<5.19	2.11 (1.34,3.33)	.0013
	≥5.19	0.93 (0.83,1.03)	.1633
	Likelihood ratio test		.003
1-yr all-cause mortality
	<5.46	1.81 (1.36, 2.40)	<.0001
	≥5.46	1.01 (0.91, 1.11)	.889
	Likelihood ratio test		<.001

Adjusted: age, gender, race, heart rate, respiration rate, SBP, SpO₂, Tempeature, hypertension, diabetes, chronic lung disease, CAD, CHF, CKD, liver disease, malignancy, obesity, Na+, K+, glucose, BUN, Cr, HGB, WBC, PLT, ALT and AST.

ALB = albumin, ALT = alanine aminotransferase, AST = aspartate transaminase, BUN = blood urea nitrogen, CAD = coronary atherosclerotic disease, CHF = congestive heart failure, CI = confidence interval, CKD = completely knocked down, Cr = creatinine, HGB = hemoglobin, K+ = kalium, Lac = lactic acid, Na+ = Sodium, PLT = platelet, RAR = RDW/ALB ratio, RDW = red blood cell distribution width, Ref = reference, SBP = systolic pressure, SpO2 = blood oxygen saturation, WBC = white blood cells.