Table 4.

Logistic regression result for predicting 90-d death.

Variable	OR	95%CI	P value
CURB-65 0	—		—
CURB-65 1	1.827	0.847–3.941	0.125
CURB-65 2	2.221	0.985–4.956	0.054
CURB-65 3	3.857	1.438–10.083	0.007
CURB-65 4	13.693	2.107–88.978	0.006
PSI grade I	—		—
PSI grade II	1.483	0.340–6.466	0.600
PSI grade III	3.050	0.744–12.503	0.121
PSI grade IV	32.491	8.571–123.166	0.000
PSI grade V	92.556	22.344–383.476	0.000
RDW < 13.3%	—		—
RDW 13.3%–14.1%	1.057	0.633–1.768	0.083
RDW 14.1%–15.2%	3.644	2.196–6.115	0.000
RDW > 15.2%	5.519	3.287–9.267	0.000

OR: odds ratio.