. 2018 Nov 13;39(2):214–217. doi: 10.3343/alm.2019.39.2.214

Table 2. Performance of C. DIFF QUIK CHEK COMPLETE–Toxin A/B and RIDASCREEN Clostridium difficile Toxin A/B compared with toxigenic Clostridioides difficile culture.

Test	Result	Toxigenic culture		Sensitivity (%) (95% CI)	Specificity (%) (95% CI)	Kappa (95% CI)
Test	Result	Positive (N=60)	Negative (N=90)	Sensitivity (%) (95% CI)	Specificity (%) (95% CI)	Kappa (95% CI)
C. DIFF QUIK CHEK COMPLETE–Toxin A/B	Positive	36	5	60.0 (46.5–72.2)	94.4 (86.9–97.9)	0.56 (0.41–0.71)
C. DIFF QUIK CHEK COMPLETE–Toxin A/B	Negative	24	85	60.0 (46.5–72.2)	94.4 (86.9–97.9)	0.56 (0.41–0.71)
RIDASCREEN Clostridium difficile Toxin A/B	Positive	20	1	33.3 (22.0–46.8)	98.9 (93.1–99.9)
RIDASCREEN Clostridium difficile Toxin A/B	Negative	40	89	33.3 (22.0–46.8)	98.9 (93.1–99.9)

Abbreviation: CI, confidence interval.