Table 3

Univariate and multivariate analysis (with and without CRP) of clinical and laboratory predictors of infants with serious bacterial infections

	Univariate analysis		Multivariate analysis without CRP		Multivariate analysis with CRP
	Unadjusted OR (95% CI)	P value	Adjusted OR (95% CI)	P value	Adjusted OR (95% CI)	P value
Age at presentation	1.016 (1.004 to 1.028)	0.008	1.012 (0.998 to 1.026)	0.099	1.006 (0.991 to 1.021)	0.424
Gender	3.968 (1.885 to 8.354)	0.005	4.049 (1.740 to 9.424)	0.001	3.935 (1.597 to 9.693)	0.003
<24 hour of fever at presentation	0.325 (0.148 to 0.711)	0.005	0.418 (0.165 to 1.062)	0.067	0.978 (0.318 to 3.008)	0.969
WBC	1.108 (1.038 to 1.177)	0.001	0.730 (0.540 to 0.986)	0.040	0.762 (0.559 to 1.039)	0.086
ANC	1.224 (1.100 to 1.347)	<0.001	2.318 (1.245 to 4.315)	0.008	1.934 (1.007 to 3.714)	0.048
NLR	1.631 (1.141 to 2.330)	0.007	0.279 (0.077 to 1.018)	0.053	0.330 (0.085 to 1.282)	0.109
CRP	1.053 (1.030 to 1.074)	<0.001			1.037 (1.013 to 1.063)	0.003

ANC, absolute neutrophil ratio; CRP, C-reactive protein; NLR, neutrophil to lymphocyte ratio; WBC, white blood cell count.