Table 3 Prediction of rifampicin resistance using isoniazid results (n = 315)
From: Can resistance to either isoniazid or rifampicin predict multidrug resistance tuberculosis (MDR-TB)
Decision statistics | Estimate (%) | 95% Confidence interval | |
|---|---|---|---|
Lower (%) | Upper (%) | ||
Sensitivity | 62.1 | 42.3 | 79.3 |
Specificity | 98.3 | 96.0 | 99.4 |
Diagnostic accuracy | 94.9 | 91.9 | 97.1 |
Positive predictive value | 78.3 | 56.3 | 92.5 |
Negative predictive value | 96.2 | 93.4 | 98.1 |