Table 2.

Clinical prediction rule to support the diagnosis of tuberculous meningitis [31]

Clinical feature	Scorea
Age
≥36 years	+ 2
<36 years	0
White blood cell count in blood
≥15 × 103 cells/mL	+ 4
<15 × 103 cells/mL	0
Duration of illness
≥6 days	− 5
<6 days	0
White blood cell count in cerebrospinal fluid
≥900 × 103 cells/µL	+ 3
<900 × 103 cells/µL	0
Percentage of neutrophils in cerebrospinal fluid
≥75	+ 4
<75	0

^aTotal score ≤ 4 suggests tuberculous meningitis; total score > 4 suggests alternate diagnosis