Table 2.
Sensitivity and specificity of QCA.
| Categorical/statistical value | AVS success or failure (Routine method) |
|||
|---|---|---|---|---|
| Success | Failure | Total | ||
|
Determination of AVS success or failure in both kits (QCA and Routine method) |
212 | 38 | – | |
|
AVS success/failure (QCA) |
Success | 210 | 7 | 217 |
| Failure | 2 | 31 | 33 | |
| Total | 212 | 38 | 250 | |
|
QCA sensitivity (QCA success/Routine method success) |
Point estimation (%) | 99.1 | – | – |
| Confidence interval (95%) | (96.6, 99.9) | – | – | |
|
QCA specificity (QCA failure/Routine method failure) |
Point estimation (%) | – | 81.6 | – |
| Confidence interval (95%) | – | (65.7,92.3) | – | |
AVS Adrenal vein sampling, QCA Quick cortisol assay.