Table 2.
Comparison of diagnostic performance of CD1a clone MTB1 immunostaining against slit skin smear results
| CD1a clone MTB1 staining | Microscopic results for SSS (gold standard) | |
|---|---|---|
| Positive (103) | Negative (13) | |
| Test positive (75) | True positive (73) | False positive (2) |
| Test negative (41) | False negative (30) | True negative (11) |
| A | ||
| Accuracy = 72.4% | ||
| Sensitivity = 70.9% | ||
| Specificity = 84.6% | ||
| Positive predictive value = 97.3% | ||
| Negative predictive value = 26.8% | ||
| K-value = 0.26 | ||
| CD1a clone MTB1 staining | Microscopic results for SSS (gold standard) | |
| Positive (78) | Negative (13) | |
| Test positive (60) | True positive (58) | False positive (2) |
| Test negative (31) | False negative (20) | True negative (11) |
| B | ||
| Accuracy = 75.8% | ||
| Sensitivity = 74.4% | ||
| Specificity = 84.6% | ||
| Positive predictive value = 96.7% | ||
| Negative predictive value = 35.4% | ||
| K-value = 0.37 | ||
A-CD1a clone MTB1 staining results against all the slit skin smear results (n = 116)
B-CD1a clone MTB1 staining results against the slit skin smear results (patients with >100 LD bodies seen in histology are excluded) (n = 91).