Table 3 Summary of total error, false negative and false positive rates for the four medical centers, and sub-classification of false positives and false negatives by possible causative factors (with % of the total errors of each type—false positives or false negatives)
Cohort | Image set total | Total errors (False positive and false negative) | Error type | Total (% of image set total) | Technical | Missing Specificity/Sensitivity | New/abnormal findings | Unknown |
|---|---|---|---|---|---|---|---|---|
Center A | 675 | 48 (7.1%) | False positive | 2 (0.29%) | 0 (0%) | 0 (0%) | 2 (100%) | 0 (0%) |
False negative | 46 (6.81%) | 28 (60.9%) | 17 (37%) | 0 (0%) | 1 (2.2%) | |||
Center B | 417 | 46 (11%) | False positive | 5 (1.2%) | 0 (0%) | 5 (100%) | 0 (0%) | 0 (0%) |
False negative | 41 (9.8%) | 25 (61%) | 16 (39%) | 0 (0%) | 0 (0%) | |||
Center C | 465 | 28 (6.0%) | False positive | 3 (0.63%) | 0 (0%) | 3 (100%) | 0 (0%) | 0 (0%) |
False negative | 25 (5.37%) | 22 (88%) | 2 (8%) | 0 (0%) | 1 (4%) | |||
Center D | 667 | 26 (3.9%) | False positive | 23 (3.45%) | 0 (0%) | 20 (87%) | 3 (13%) | 0 (0%) |
False negative | 3 (0.45%) | 0 (0%) | 3 (100%) | 0 (0%) | 0 (0%) |