Table 2.
Diagnostic performance of expert visual analysis and automated analysis using standard software for the detection of coronary artery disease (n = 206)
| Sensitivity | Difference with expert | Specificity | Difference with expert | Diagnostic accuracy | Difference with expert | |
|---|---|---|---|---|---|---|
| Expert | 56.5 (45.8–66.8) | 93.9 (87.8–97.5) | 77.2 (70.8–82.7) | |||
| SSS NC | 66.3 (55.7–75.8) | P = 0.108 | 68.4 (59.1–76.8) | P < 0.001* | 67.5(60.6–73.8) | P = 0.012* |
| SSS AC | 67.0 (56.4–76.5) | P = 0.064 | 71.9 (62.7–79.9) | P < 0.001* | 69.8 (63.0–76.0) | P = 0.063 |
| SDS NC | 80.0 (70.3–87.7) | P < 0.001* | 50.0 (40.5–59.5) | P < 0.001* | 63.2 (56.2–69.9) | P = 0.003* |
| SDS AC | 86.5 (77.6–92.8) | P < 0.001* | 49.1 (39.6–58.7) | P < 0.001* | 65.5 (58.5–72.0) | P = 0.023* |
| S-TPD NC | 62.0 (51.2–71.9) | P = 0.405 | 73.7 (64.6–81.5) | P < 0.001* | 68.4 (61.6–74.7) | P = 0.020* |
| S-TPD AC | 64.8 (54.1–74.6) | P = 0.152 | 76.3 (67.4–83.8) | P < 0.001* | 71.2 (64.5–77.3) | P = 0.134 |
| I-TPD NC | 65.6 (54.8–75.3) | P = 0.108 | 69.9 (60.6–78.2) | P < 0.001* | 68.0 (61.1–74.3) | P = 0.027* |
| I-TPD AC | 65.9 (55.3–75.6) | P = 0.108 | 65.8 (56.3–74.4) | P < 0.001* | 65.8 (58.9–72.3) | P = 0.005* |
Values are no. (95% confidence interval)
AC = attenuation correction; I-TPD = ischemic total perfusion deficit; NC = non-corrected; SDS = summed difference score; SSS = summed stress score; S-TPD = stress total perfusion deficit. *Indicating a significant difference with expert visual analysis (P < 0.05)