Table 3.

Logistic regression of serum procalcitonin and lactate dehydrogenase for prolonged fever more than 3 days after admission

Variable	1st quintile	2nd quintile	3rd quintile	4th quintile	5th quintile
PCT (ng/mL)
Median	0.02	0.034	0.055	0.077	0.168
OR (95% CI)		0.94 (0.33–2.87)	2.13 (0.73–6.16)	1.45 (0.51–4.09)	3.69 (1.27–10.70)
LDH (IU/mL)
Mean	248	275.5	298	327	395
OR (95% CI)		0.48 (0.17–1.36)	0.51 (0.17–1.55)	0.52 (0.17–1.51)	0.50 (0.17–1.41)
CRP (mg/dL)
Median	0.6	1.06	2.05	3.57	5.94
OR (95% CI)		2.12 (0.67–6.62)	4.02 (1.28–12.62)	2.42 (0.79–7.39)	4.03 (1.21–13.34)

Adjusted for age and sex.

PCT, procalcitonin; LDH, lactate dehydrogenase; CRP, C-reactive protein; OR, odds ratio; CI, confidence interval.