Table 1.

Characteristics of the study sample and HBP levels in CSF and serum.

Characteristics	Bacterial group	Viral group	Control group	Total
	n = 30	n = 30	n = 30	n = 90
Gender
Male	19 (63.3%)	18 (60)%	12 (40%)	49 (54.4%)
Female	11 (30.6%)	12 (40)%	18 (60)%	41 (45.6%)
Age in years
Mean ± SD	24.7 ± 14.7	24.7 ± 14.8	24.9 ± 14.3	24.9 ± 14.5
(Minimum–maximum)	(1.5–50)	(1.0–49)	(1.5–50)	(1.0–50)
Pre-admission antibiotic	25 (83%)	27 (90%)	24 (80%)	76 (84.4%)
CSF HBP level in ng/ml
Mean ± SD	174.8 ± 46.7	3.3 ± 1.7	0.82 ± 0.3
(Minimum–maximum)	56.7–295	1.30–7.5	0.31–1.8
Serum HBP levels in ng/ml
Mean ± SD	192.2 ± 56.6	3.7 ± 1.9	0.84 ± 0.3
(Minimum–maximum)	45.3–289	1.1–7.6	0.4–1.51