Diagnostic tool | Sensitivity (95%CI) | Specificity (95%CI) |
---|---|---|
Symptoms | ||
Cough>2wks | 97.1 (92.9–99.2) | 10.6 (6.7–15.7) |
Unintentional weight loss | 84.3 (77.2–89.9) | 53.3 (46.1–60.4) |
Night sweats | 69.3 (60.9–76.8) | 64.8 (57.8–71.4) |
Cough>2wks + weight loss | 82.1 (74.8–88.1) | 57.3 (50.1–64.3) |
Cough> 2wks + night sweats | 67.1 (58.7–74.8) | 67.3 (60.4–73.8) |
Weight loss + night sweats | 65.0 (56.5–72.9) | 76.9 (70.4–82.6) |
All symptoms | 62.9 (54.3–70.9) | 78.4 (72.0–83.9) |
Sputum Smear Microscopy (with Spot-Morning-Spot specimens) | ||
Positive for AFB | 81.4 (74–87.5) | 99.5 (97.2–99.9) |
Chest radiography (CXR) | ||
Abnormalities suggestive of active TB | 88.6 (82.1–93.3) | 82.9 (77–87.9) |
Combination | ||
Cough>2wks + SSM | 80.0 (72.4–86.3) | 99.5 (97.2–99.9) |
Cough>2wks + CXR | 86.4 (79.6–91.6) | 85.4 (79.8–90.0) |
Weight loss+SSM | 71.4 (63.2–78.7) | 99.5 (97.2–99.9) |
Weight loss+CXR | 76.4 (68.5–83.2) | 91.0 (86.1–94.6) |
Night sweat+SSM | 60.0 (51.4–68.2) | 99.5 (97.2–99.9) |
Night sweat+CXR | 63.6 (55–71.5) | 95.5 (91.6–97.9) |
Cough>2wks + weight loss+SSM | 70.0 (61.7–77.5) | 99.5 (97.2–99.9) |
Cough>2wks + weight loss+CXR | 74.3 (66.2–81.3) | 92.5 (87.9–95.7) |
Cough>2wks + night sweat+SSM | 58.6 (50–66.8) | 99.5 (97.2–99.9) |
Cough> 2wks + night sweat+CXR | 61.4 (52.8–69.5) | 96.0 (92.2–98.3) |
Weight loss+night sweat+SSM | 56.4 (47.8–64.8) | 99.5 (97.2–99.9) |
Weight loss+night sweat+CXR | 59.3 (50.7–67.5) | 96.5 (92.9–98.6) |
All symptoms+SSM | 55 (46.4–63.4) | 99.5 (97.2–99.9) |
All symptoms+CXR | 57.1 (48.5–65.5) | 97.0 (93.6–98.9) |
SSM + CXR | 78.6 (70.8–85.1) | 99.5 (97.2–99.9) |
Cough>2wks + SSM + CXR | 77.1 (69.3–83.8) | 99.5 (97.2–99.9) |
Weight loss+SSM + CXR | 68.6 (60.2–76.2) | 99.5 (97.2–99.9) |
Night sweat+SSM + CXR | 58.6 (50–66.8) | 99.5 (97.2–99.9) |
Cough>2wks + weight loss+SSM + CXR | 67.1 (58.7–74.8) | 99.5 (97.2–99.9) |
Cough>2wks + night sweat+SSM + CXR | 57.1 (48.5–65.5) | 99.5 (97.2–99.9) |
Weight loss+night sweat+SSM + CXR | 55.0 (46.4–63.4) | 99.5 (97.2–99.9) |
All symptoms+SSM + CXR | 53.6 (45–62) | 99.5 (97.2–99.9) |