Table 1.
Comparison of the sensitivity, specificity, and accuracy of the diagnostic systemsa
| Diagnostic system (n) | Group A n = 64 |
Group B n = 57 |
Sensitivity (95% CI) |
Specificity (95% CI) |
Accuracy % |
|---|---|---|---|---|---|
| Kenneth Jones | |||||
| With microbiological data | 43 | 9 | 67.2 (54.3–78.4) | 84.2 (72.1–92.5) | 75.2 |
| Without microbiological data | 18 | 9 | 28.1 (17.6–40.8) | 84.2 (72.1–92.5) | 54.5 |
| Tidjani | |||||
| With microbiological data | 53 | 4 | 82.8 (71.3–91.1) | 93.0 (83.0–98.1) | 87.6 |
| Without microbiological data | 29 | 4 | 45.3 (32.8–58.3) | 93.0 (83.0–98.1) | 67.8 |
| MoHb | |||||
| With 30 point cut-off | 51 | 31 | 85.0 (73.4–92.9) | 39.2 (25.8–53.9) | 64.0 |
| With 40 point cut-off | 29 | 12 | 48.3 (35.2–61.6) | 76.5 (62.5–87.2) | 61.3 |
| Ben Marais | |||||
| With microbiological data | 60 | 40 | 93.8 (84.8–98.3) | 29.8 (18.4–43.4) | 63.6 |
| Without microbiological data | 54 | 40 | 84.4 (73.1–92.2) | 29.8 (18.4–43.4) | 58.7 |
CI, confidence interval; MoH, Brazilian Ministry of Health.
a
The number of cases and percentage sensitivity, specificity, and accuracy for each diagnostic system, with and without the inclusion of microbiological data, are shown. For the MoH system, values were calculated considering a 30-point and 40-point TB case cut-off.
b
MoH: 60 TB cases and 51 not TB cases.