Table 3.
Number of Rescreened Slides and False Negative Rate among Negative Results, 2010-2014
| 2010 | 2011 | 2012 | 2013 | 2014 | |
|---|---|---|---|---|---|
| Number of slides | 2,168,248 | 1,713,490 | 1,500,413 | 1,247,051 | 1,008,024 |
| Abnormal results | 24,396 | 22,681 | 21,460 | 17,545 | 15,473 |
| Normal results | 2,143,852 | 1,690,809 | 1,478,953 | 1,229,506 | 992,551 |
| Number of rescreened slides (%) | 50,005 (2.3) |
50,070 (2.9) |
100,000 (6.7) |
100,000 (8.0) |
30,000 (3.0) |
| Number of qualified slides | 49,414 | 49,256 | 97,933 | 98,006 | 29,458 |
| Number of unsatisfied slides | 591 | 814 | 2,067 | 1,994 | 542 |
| False negative (%) | 434(0.9) | 412(0.8) | 468(0.5) | 579(0.6) | 187(0.6) |
| Percent of false negative rate | 43.3 | 38 | 24.4 | 28.9 | 28.6 |