Table 2. TST and IGRA concordant and discordant results.
| IGRA | ||||
| Positive | Negative | Totals | ||
| TST | Positive | 46 (18%) | 40 (15.6%) | 86 |
| Negative | 4 (1.6%) | 166 (64.8%) | 170 | |
| Totals | 50 | 206 | 256 | |
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