Table 5 Test characteristics of CDI in the Hospitalization Admission and Discharge Database (DAD) to CDI in the laboratory dataset
IBD | No IBD | p-value | CD | UC | p-value | |
|---|---|---|---|---|---|---|
Admissions | 12,147 | 46,877 | 6,792 | 5,355 | ||
True positive | 0.76 | 0.40 | < 0.0001 | 0.63 | 0.92 | 0.18 |
False negative | 0.25 | 0.14 | 0.27 | 0.22 | ||
False positive | 0.37 | 0.09 | 0.31 | 0.45 | ||
True negative | 98.63 | 99.37 | 98.79 | 98.41 | ||
Overall diagnostic accuracy | 99.38 | 99.77 | < 0.001 | 99.43 | 99.33 | 0.56 |
Sensitivity | 75.41 | 73.83 | 0.80 | 70.49 | 80.33 | 0.29 |
Specificity | 99.63 | 99.91 | < 0.001 | 99.69 | 99.55 | 0.23 |
Positive predictive value | 67.15 | 82.17 | 0.0014 | 67.19 | 67.12 | 1 |
Negative predictive value | 99.75 | 99.86 | 0.016 | 99.73 | 99.77 | 0.72 |