Table 2.
Sensitivity, Specificity, PPV, NPV and Accuracy in Detecting Colonic wall Thickening with 64-Slice CT
| Sensitivity (%, n) | Specificity (%, n) | PPV (%, n) | NPV (%, n) | Accuracy (%, n) | |
|---|---|---|---|---|---|
| Colonic wall thickening consistent with neoplastic processes | 95.6% (195/204) | 90.4% (272/301) | 87.1% (195/224) | 96.8% (272/281) | 92.4% (467/505) |
| Colonic wall thickening consistent with IBD | 97.2% (208/214) | 97.9% (285/291) | 97.2% (208/214) | 97.9% (285/291) | 97.6% (493/505) |
| Colonic wall thickening consistent with diverticulitis | 90.5% (19/21) | 99.8% (483/484) | 95% (19/20) | 99.6% (483/485) | 99.4% (502/505) |
| Colonic wall thickening due to other etiologies | 50% (25/50) | 96,7% (440/455) | 62.5% (25/40) | 94.6% (440/465) | 92% (465/505) |