Table 5.

Logistic regression of dichotomized risk factors for bacterial infection in dengue patients within the derivation cohort

Risk factor	OR*	Standardized coefficients	P value
Pulse rate at ED ≥ 90 (beats/minute)	2.19 (1.24–3.85)	0.78 (0.22–1.35)	0.007
Total white cell count within 24 hours of admission ≥ 6 (109/L)	2.13 (1.15–3.94)	0.76 (0.14–1.37)	0.016
Hematocrit within 24 hours of admission < 40 (%)	3.52 (2.00–6.18)	1.26 (0.69–1.82)	< 0.001
Sodium within 24 hours of admission < 135 (mmol/L)	2.44 (1.39–4.28)	0.89 (0.33–1.45)	0.002
Urea within 24 hours of admission ≥ 5 (mmol/L)	2.65 (1.44–4.87)	0.98 (0.37–1.58)	0.002

Hosmer–Lemeshow χ² = 5.40, P = 0.6113. ED = emergency department; OR = odds ratio (95% CI).

^*Logistic regression analysis based on complete data for N = 1,299 patients (N = 60 patients with concurrent bacterial infection).