Research Article
Chest Radiographs for Pediatric TB Diagnosis: Interrater Agreement and Utility
Table 3
Sensitivity and specificity: culture confirmed TB versus abnormal likely TB diagnosis on radiograph.
| Reader/rater | Culture results | Sensitivity (95% CI) | Specificity (95% CI) | Positive predictive values* | Negative predictive values* | +ve () | −ve () |
| Clinician | | | | | | | Positive | 5 | 126 | 62.5% (24.5%–91.5%) | 81.6% (78.4%–84.4%) | 3.8% (1.41%–9.13%) | 99.5% (98.3%–99.9%) | Negative | 3 | 557 | | | Medical officer | | | | | | | Positive | 6 | 185 | 75.0% (34.9%–96.8%) | 72.9% (69.4%–76.2%) | 3.14% (1.28%–7.03%) | 99.6% (98.4%–99.9%) | Negative | 2 | 498 | | | Radiologist | | | | | 3.96% (1.23%–10.0%) | 99.3% (98.1–99.8%) | Positive | 4 | 101 | 50.0% (15.7%–84.3%) | 85.2% (82.3%–87.8%) | | | Negative | 4 | 582 | | | Pulmonologist | | | | | | | Negative | 4 | 110 | 50.0% (15.7%–84.3%) | 83.9% (80.9%–86.6%) | 3.5% (1.13%–9.27%) | 99.5% (98.1%–99.8%) | Positive | 4 | 573 | | |
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*Disease incidence 1.12% (0.54–2.36).
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