Table 2.

Demonstration of mean absorbance with range and interquartile range of 65 kD antigen in the CSF of TBM, non TBM infectious and non TBM non infectious patients. The data are expressed as mean ± SD.

Patient group	Absorbance Mean ± SD	Range	Interquartile Range
1. Tuberculous Meningitis (n = 80)	0.70 ± 0.23	0.23 – 1.29	0.57–1.05
Culture Positive (n = 18)	0.94 ± 0.18	0.54 – 1.29	0.78–1.05
Clinically Suspected (n = 62)	0.64 ± 0.20	0.23 – 0.98	0.57–0.78
2. Non TBM infectious meningitis (n = 35)	0.32 ± 0.14	0.12 – 0.78	0.22–0.35
Pyogenic meningitis (n = 25)	0.32 ± 0.16	0.12 – 0.78	0.22–0.35
Viral meningitis (n = 10)	0.33 ± 0.09	0.20 – 0.56	0.30–0.34
3. Non-infectious neurological disorders (n = 45)	0.32 ± 0.13	0.20 – 0.78	0.23–0.34