TABLE 5.
Characteristics of favourable scoring systems to differentiate Crohn disease (CD) and ulcerative colitis (UC)
|
Specificity
|
Sensitivity
|
IBDU‡ | |||
|---|---|---|---|---|---|
| UC* | CD† | UC* | CD† | ||
| ½PC+ACCS+DAD§ | 99.42±0.4 | 98.84±0.5 | 84.8±1.9 | 93.49±1.2 | 7.9±1.0 |
| 0.4PC+ACCS+DAD | 99.71±0.3 | 99.07±0.5 | 86.26±1.9 | 93.49±1.2 | 8.3%±1.0 |
| ⅓PC+DAD+ACCS | 99.71±0.3 | 99.07±0.5 | 85.66±1.9 | 93.26±1.2 | 9.3±1.1 |
| ¼4PC+DAD+ACCS | 99.71±0.3 | 99.30±0.4 | 77.78±2.24 | 95.12±1.0 | 12.56±1.2 |
| ½PC+⅔ACCS+DAD | 99.12±0.5 | 99.07±0.5 | 86.84±1.8 | 91.86±1.3 | 9.3±1.1 |
| ⅓PC+DAD+⅔ACCS | 99.71±0.3 | 99.30±0.4 | 89.82±1.6 | 89.77±1.5 | 13.86±1.2 |
Data presented as % ± SD. Final definition indicated in bold.
*
Patients with a cumulative score >+2 are classified as UC;
†
Patients with a cumulative score <–2 are classified as CD;
‡
Percentage ±1 SD of patients with a score equal to or between −2 and +2;
§
Ratios represent the weight assigned to each medical contact for the corresponding database. ACCS Ambulatory Care Classification System; DAD Hospital Discharge Abstract Database; IBDU Inflammatory bowel disease unspecified; PC Physician billing claims