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Sensitivity and specificity of SIMOA toxin assays compared to CDI statusa
| Test | Sensitivity (% [95% CI]) (n = 66) | Specificity (% [95% CI]) (n = 174) |
|---|---|---|
| SIMOA toxin A | 84.8 (73.9–92.5) | 83.9 (77.6–89) |
| SIMOA toxin B | 95.5 (87.3–99.1) | 83.3 (77–88.6) |
| SIMOA toxin A + B | 95.5 (87.3–99.1) | 79.3 (72.5–85.1) |
| C. difficile Tox A/B II | 71.2 (58.8–81.7) | 95.4 (91.1–98) |
Totals of 66 GDH- and CCNA-positive samples and 174 GDH- and/or CCNA-negative samples. CI, confidence interval.
