. Author manuscript; available in PMC: 2014 Mar 1.

Published in final edited form as: Crit Care Med. 2013 Mar;41(3):784–790. doi: 10.1097/CCM.0b013e3182741a54

Table 4.

Logistic Regression Model for In-Hospital Mortality in Relation to Acetaminophen Exposure

Characteristic	Odds Ratio	95% Confidence Interval	p-value
Age (years)	1.023	1.001–1.046	0.039
APACHE II Score	1.081	1.036–1.128	<0.001
Chronic Liver Disease	4.458	1.6–12.416	0.004
Free Hemoglobin Level (mg/dl)	1.082	1.006–1.164	0.035
Acetaminophen	0.481	0.252–0.916	0.026

The odds ratio for Cell-free hemoglobin Concentration is for an increment of every 10 mg/dl above 0 mg/dl. Acetaminophen refers to a patient receiving any amount of acetaminophen over the 96-hour study period compared to none. The Hosmer and Lemeshow goodness-of-fit statistic for this model is 0.518.