Research Article
Accuracy and Incremental Yield of the Chest X-Ray in Screening for Tuberculosis in Uganda: A Cross-Sectional Study
Table 2
Performance of the CXR or symptoms in screening culture-confirmed pulmonary tuberculosis.
| | Strategy | Culture-confirmed TB | Total number | Sensitivity (95% CI) | Specificity (95% CI) | Positive predictive value (95% CI) | Negative predictive value (95% CI) |
| | Prevalence | 160 | 4512 | | | | | | CXR | 148 | 4441 | 93 (87, 96) | 97 (96, 98) | 54 (48, 60) | 99 (99, 100) | | Symptoms | 122 | 4512 | 76 (69, 83) | 31 (30, 32) | 4 (3, 5) | 97 (96, 98) | | CXR+symptoms | 160 | 4512 | 100 (98, 100) | 29 (28, 31) | 5 (4, 6) | 100 (99, 100) |
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