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Table 5 A and B: Sensitivity, specificity, and predictive values of Thwaites scoring systems ≤4 and the Lancet scoring system ≥12 between patients with tuberculous meningitis and other etiologies

From: The diagnostic utility of the “Thwaites’ system” and “lancet consensus scoring system” in tuberculous vs. non-tuberculous subacute and chronic meningitis: multicenter analysis of 395 adult patients

A. Thwaites scoring system
Etiology Sensitivity (%) Specificity (%) Positive Predictive Value (%) Negative Predictive Value (%)
A. Thwaites
Tuberculosis 1.2 99.1 50 59.1
Fungal 0 98.9 0 89.5
Viral 0 98.9 0 92.6
Bacterial 14.3 99.2 25 98.5
Miscellaneous 0 98.9 0 95.9
Unknown 0.7 98.8 25 65.2
B. Lancet Score
Tuberculosis 50 89.3 76.1 72
Fungal 12.2 71.5 4.7 87.5
Viral 0 71.1 0 90
Bacterial 0 97.9 0 97.6
Miscellaneous 37.5 73.6 5.7 96.5
Unknown 10 63.9 13.2 56.4