Table 1.

Sensitivity, specificity and predictive values for Campylobacter-like organism test and Quick test (all patients)

Test (at 24 h)	True positive	True negative	Total
CLO test
Positive	40	1	41
Negative	0	144	144
Quick test
Positive	39	1	40
Negative	1	144	145

Campylobacter-like organism (CLO) test: sensitivity 100% [95% confidence interval (CI): 91.24-100], specificity 99.3% (95% CI: 96.2-99.88), positive predictive value (PPV) 97.6% (95% CI: 87.4-99.57), negative predictive value (NPV) 100% (95% CI: 97.4-100); Quick test: sensitivity 97.5% (95% CI: 87.12-99.56), specificity 99.3% (95% CI: 96.2-99.88), PPV 97.5% (95% CI: 87.12-99.56), NPV 99.3% (95% CI: 96.2-99.88).