Table II.

Logistic regression analysis for dose of poison, initial concentration of paraquat in urine, arterial blood lactate and APACHE II scores.

						95% CI
Variable	B	S.E	Wals	P-value	Exp (B)	LL	UL
Dose of poison, ml	0.078	0.017	20.981	<0.001	1.081	1.046	1.118
Initial concentration of paraquat in urine (C0), µg/ml	0.073	0.018	16.023	<0.001	1.076	1.038	1.115
Arterial blood lactate, mmol/l	0.948	0.290	10.682	0.001	2.580	1.462	4.556
APACHE II scores	0.054	0.044	1.472	0.225	1.055	0.967	1.151

APACHE II, Acute Physiology And Chronic Health Evaluation II; B, regression coefficient; S.E, standard error; Wals, Wald χ² value; Exp (B), adjusted odd ratio; 95% CI, 95% confidence interval; LL, lower limit; UL, upper limit.