Clinical Study
Pouched Rats’ Detection of Tuberculosis in Human Sputum: Comparison to Culturing and Polymerase Chain Reaction
Table 4
Patient-wise smear microscopy and average rat reference results.
| | Sensitivity | Specificity | Pos predictive value | Neg predictive value | | Culture/PCR | No TB | Culture/PCR | No TB |
| mear | | | | | Correct/total samples (%) | 47/81 (58.0) | 407/409 (99.5) | .96 | .92 | 95% confidence interval (CI) | 46.6–68.7 | 98–99.9 | .84–.99 | .89–.95 |
| Rat (average of 10) | | | | | Correct/total samples (%) | 57.1/81 (70.5) | 329.1/409 (80.5) | .42 | .93 | 95% CI | 68.2–72.8 | 78.4–82.6 | .33–.50 | .89–.96 |
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mear microscopy conducted at DOTS centers.
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