TABLE 3.
Overall sensitivities of TB AMPLICOR, ZN staining of smears, and radiometric culture for M. tuberculosis for detection of individual categories of TBM and adjusted sensitivities of TB AMPLICOR after excluding patients whose first CSF sample was taken more than 9 days into treatment
| TBM category | Sensitivity (no. of patients positive/total no. of patients tested [%])
|
|||
|---|---|---|---|---|
| TB AMPLICOR | Adjusted TB AMPLICORa | ZN staining of smears | Culture for M. tuberculosis | |
| Definite | 7/8 (87.5) | 7/8 (87.5) | 8/8 (100) | 3/8 (37.5) |
| Probable | 2/10 (20) | 2/7 (28.6) | NAb | NA |
| Possible | 1/15 (6.7) | 1/13 (7.7) | NA | NA |
| Uncertain | 0/7 (0) | 0/7 (0) | NA | NA |
| Definite or probable | 9/18 (50.0) | 9/15 (60.0) | 8/18 (44.4) | 3/18 (16.7) |
| Overall sensitivity | 10/40 (25.0) | 10/35 (28.6) | 8/40 (20) | 3/40 (7.5) |
a
After excluding patients whose first CSF sample was taken more than 9 days into treatment.
b
NA, not applicable.