TABLE 5.
Total Number of Reported Assignments per Dose
| Radiation exposure | Totals | Totals a per dose | True doses (Gy)b
|
Percentage overallc
|
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0.1 | 0.7 | 1.4 | 2.0 | 2.2 | 2.6 | 3.0 | 4.2 | 6.4 | Accuracy | Sensitivity | Specificity | |||
| Never/ever | |||||||||||||||
| all performer | 78 | 8 | 5 | 6 | 8 | 8 | 8 | 8 | 7 | 7 | 8 | 8 | 93.6 | 97.1 | 62.5 |
| low MAD | 40 | 4 | 3 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 92.5 | 94.4 | 75.0 |
| high MAD | 38 | 4 | 2 | 4 | 4 | 4 | 4 | 4 | 3 | 3 | 4 | 4 | 94.7 | 100.0 | 50.0 |
| <0.1 Gy vs. >0.1 Gy | |||||||||||||||
| all performer | 78 | 8 | 7 | 4 | 8 | 8 | 8 | 8 | 7 | 7 | 8 | 8 | 93.6 | 100.0 | 68.8 |
| low MAD | 40 | 4 | 4 | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 97.5 | 100.0 | 87.5 |
| high MAD | 38 | 4 | 3 | 1 | 4 | 4 | 4 | 4 | 3 | 3 | 4 | 4 | 89.5 | 100.0 | 50.0 |
| <1.5 Gy vs. >1.5 Gy | |||||||||||||||
| all performer | 78 | 8 | 8 | 8 | 6 | 3 | 7 | 6 | 7 | 6 | 8 | 8 | 85.9 | 91.3 | 78.1 |
| low MAD | 40 | 4 | 4 | 4 | 4 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 95.0 | 100.0 | 87.5 |
| high MAD | 38 | 4 | 4 | 4 | 2 | 1 | 3 | 2 | 3 | 2 | 4 | 4 | 76.3 | 81.8 | 68.8 |
| 2–4 Gy vs. >4 Gy | |||||||||||||||
| all performer | 46 | 8 | 7 | 8 | 7 | 4 | 3 | 5 | 73.9 | 50.0 | 86.7 | ||||
| low MAD | 24 | 4 | 4 | 4 | 4 | 2 | 2 | 4 | 83.3 | 75.0 | 87.5 | ||||
| high MAD | 22 | 4 | 3 | 4 | 3 | 2 | 1 | 1 | 63.6 | 25.0 | 85.7 | ||||
Notes. The column “totals” refers to the total number of reported assignments and the column “totals per dose” describes the total number of reported assignments per dose. Numbers of correctly reported assignments (left of the respective critical dose true negatives, right of it true positives) to the groups are shown for each irradiated sample (left part of the table) for all performers and for manual and automated scoring. Columns on the right show the overall agreement (accuracy, sensitivity and specificity).
a
Seven for 2.6 Gy and 3 Gy;
b
related to the totals per dose.
c
Averages from the reported dose estimates, related to totals.