Table 2.
Utility of low- and high-dose dexamethasone suppression test for the differential diagnosis of CD and EAS.
| Criteria for suppression | CD, suppressed (TP) | EAS, not suppressed (TN) | EAS, suppressed (FP) | CD, not suppressed (FN) | Sensitivity % (95%CI) | Specificity % (95%CI) |
|---|---|---|---|---|---|---|
| LDDST | 197 | 27 | 2 | 72 | 73.2 | 93.1 |
| <52.3% | (67.5, 78.4) | (77.2, 99.2) | ||||
| LDDST | 106 | 29 | 0 | 163 | 39.4 | 100 |
| <26.0% | (33.5, 45.5) | (88.1, 100) | ||||
| HDDST | 225 | 23 | 6 | 44 | 83.6 | 79.3 |
| <37.6% | (78.7, 87.9) | (60.3, 92) | ||||
| HDDST | 242 | 18 | 11 | 27 | 90.0 | 62.1 |
| <50% | (85.7, 93.3) | (42.3, 79.3) | ||||
| HDDST | 21 | 29 | 0 | 248 | 7.8 | 100 |
| <1.7% | (4.9, 11.7) | (88.1, 100) |
TP, true positive; TN, true negative; FP, false positive; FN, false negative.