TABLE 4.
Performance characteristics of N. gonorrhoeae culture, PCR, and SDA before and after resolution of discordant results
| Test | Discrepant analysisa | Sensitivity (%) | 95% CI | Specificity (%) | 95% CI |
|---|---|---|---|---|---|
| Culture | A | 78/115 (67.8) | 58.5–76.4 | 618/618 (100) | 99.4–100 |
| B | 78/120 (65) | 55.8–73.5 | 613/613 (100) | 99.4–100 | |
| PCR | A | 110/115 (95.7) | 90.1–98.6 | 610/618 (98.7) | 97.5–99.4 |
| B | 115/120 (95.8) | 90.5–98.6 | 610/613 (99.5) | 98.6–99.9 | |
| SDA | A | 108/115 (93.9) | 87.9–97.5 | 618/618 (100) | 99.4–100 |
| B | 108/120 (90.0) | 83.2–94.7 | 613/613 (100) | 99.4–100 |
a
A, before additional testing of discordant results; B, after resolution of discordant positive PCR results by LCR testing.