| total | 1998/6〜9 | /10〜12 | 1999/1〜3 | /4〜6 | |
| accuracy(%) | 95.2 | 91.1 | 88.0 | 97.1 | 96.9 |
| sensitivity(%) | 88.5 | 94.1 | 75.0 | 92.5 | 90.0 |
| specificity(%) | 100 | 100 | 100 | 100 | 100 |
| false negative rate A(%) | 11.5 | 5.9 | 25.0 | 7.7 | 10.0 |
| FN/(TP+FN) false negative rateB(%) FN/all identified cases |
4.8 | 2.9 | 12.0 | 2.9 | 3.1 |