Laboratory and radiological investigation findings of patients with definite, probable and possible tuberculous meningitis (TBM).

IQR, interquartile range; n, number of patients; N, total number of patients for whom results were available; TB, tuberculosis; AFB, acid-fast bacilli; M.tb, Mycobacterium tuberculosis; CT, computed tomography.*Significantly different (p**p1N includes total number of patients who underwent procedure.2Significantly more patients with probable TBM had CT brain performed compared to patients with definite TBM, p = 0.007.3Significantly less patients with possible TBM had CT brain performed compared to patients with definite TBM, p = 0.04.