Table 1 QCA performance: pre- vs. post-ACTH infusion.
Left Adrenal Vein | Right Adrenal Vein | Combined left and right adrenal veins | ||||
|---|---|---|---|---|---|---|
Pre-ACTH n = 48 | Post-ACTH n = 34 | Pre-ACTH n = 69 | Post-ACTH n = 43 | Pre-ACTH n = 117 | Post-ACTH n = 77 | |
True Positive (%) | 21 (43.7) | 32 (94.1) | 29 (42.0) | 33 (76.7) | 50 (42.7) | 65 (84.4) |
True Negative (%) | 6 (12.5) | 2 (0.6) | 27 (39.1) | 10 (23.2) | 33 (28.2) | 12 (15.6) |
False Positive (%) | 14 (29.2) | 0 (0) | 9 (13) | 0 (0) | 23 (19.7) | 0 (0) |
False Negative (%) | 7 (14.6) | 0 (0) | 4 (5.8) | 0 (0) | 11 (9.4) | 0 (0) |
Sensitivity % (95% CI) | 75 (56.6–87.3) | 100 (89.3–100) | 87.9 (72.7–95.2) | 100 (89.6–100) | 82 (70.5–89.6) | 100 (94.4–100) |
Specificity % (95% CI) | 30 (14.5–51.9) | 100 (34.2–100) | 75 (58.9–86.2) | 100 (72.2–100) | 58.9 (45.9–70.8) | 100 (75.7–100) |
Positive predictive value % (95% CI) | 60 (43.6–74.4) | 100 (89.3–100) | 76.3 (60.8–87.0) | 100 (89.6–100) | 68.5 (57.1–77.9) | 100 (94.4–100) |
Negative predictive value % (95% CI) | 46.2 (23.2–70.9) | 100 (34.2–100) | 87.1 (71.1–94.9) | 100 (72.2–100) | 75 (60.6–85.4) | 100 (75.8–100) |
