(a).
| Positive Xpert assay | Negative Xpert assay | Total | |
|---|---|---|---|
| Culture grew M. tuberculosis | 41 | 2 | 43 |
| Culture grew NTM or no growth | 9 | 57 | 66 |
|
| |||
| Total | 50 | 59 | 109 |
NTM: nontuberculous mycobacteria, 4 in positive Xpert assay and 6 in negative Xpert assay.
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