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

Table 1. Performance of C. DIFF QUIK CHEK COMPLETE– GDH and RIDASCREEN Clostridium difficile GDH compared with Clostridioides difficile culture.

Test	Result	C. difficile culture		Sensitivity (%) (95% CI)	Specificity (%) (95% CI)	Kappa (95% CI)
Test	Result	Positive (N=70)	Negative (N=80)	Sensitivity (%) (95% CI)	Specificity (%) (95% CI)	Kappa (95% CI)
C. DIFF QUIK CHEK COMPLETE–GDH	Positive	67	6	95.7 (87.2–98.9)	92.5 (83.8–96.9)	0.89 (0.82–0.97)
C. DIFF QUIK CHEK COMPLETE–GDH	Negative	3	74	95.7 (87.2–98.9)	92.5 (83.8–96.9)	0.89 (0.82–0.97)
RIDASCREEN Clostridium difficile GDH	Positive	66	5	94.3 (85.3–98.2)	93.8 (85.4–97.7)
RIDASCREEN Clostridium difficile GDH	Negative	4	75	94.3 (85.3–98.2)	93.8 (85.4–97.7)

Abbreviations: CI, confidence interval; GDH, glutamate dehydrogenase.