TABLE 3.
Reliability of PCR identification of M. audouinii compared with the standard method of identification based on morphological features
| Primer | No. (%) of strains with resulta:
|
|||||||
|---|---|---|---|---|---|---|---|---|
| True positive | False positive | True negative | False negative | Sensitivity | Specificity | PPV | NPV | |
| MA1 | 27 (12.9) | 0 (0.0) | 181 (86.6) | 1 (0.5) | 96.4 | 100 | 100 | 99.5 |
| M13 | 25 (12.0) | 2 (1.0) | 179 (85.6) | 3 (1.4) | 89.3 | 98.9 | 92.6 | 98.4 |
| (GTG)5 | 25 (12.0) | 3 (1.4) | 178 (85.2) | 3 (1.4) | 89.3 | 98.3 | 89.3 | 98.3 |
| (GACA)4 | 27 (12.9) | 2 (1.0) | 179 (85.6) | 1 (0.5) | 96.4 | 98.9 | 93.1 | 99.4 |
a
Values in parentheses refer to percentages of the total number of strains (n = 209). PPV, positive predictive value; NPV, negative predictive value.