Table 3.

The likelihood ratios for different ranges of WBC counts in deceased (n=550) and surviving patients (n=1650)

	Range	Exposure	Mortality		LR*	95% CI	P value
			Yes	No
Number of leukocytes (×109/l)	>10	+	335	469	1.4	1.3-1.6	0.0001
		-	214	629
	4-10	+	200	617	0.65	0.6-0.7	0.0001
		-	349	481
	<4	+	14	12	2.3	1.1-5.0	0.04
		-	535	1086

CI: Confidence interval of likelihood ratio, LR*: Likelihood ratio of deceased patients compared with survivors