Benchmarks for Cancers for Screening Mammography
Examinations from 1996 - 2005
| |
All Screening Examinations |
| Cancer detection rate (per 1000)
| 4.7 |
| Readers with 1000+ examinations
| 450 |
| Cancers
| 15,532 |
| All examinations
| 3,294,680 |
| CDR (Median-50th percentile)
| 4.5 |
| CDR (25th, 75th percentiles)
| 3.4, 5.9 |
| CDR (10th, 90th percentiles)
| 2.6, 7.2 |
| Invasive cancer size
| |
| Readers with 15+ invasive cancers (known size)
| 229 |
| Cancers
| 8,646 |
| Mean tumor size in mm (Median - 50th percentile)
| 17.0 |
| Mean tumor size in mm (25th, 75th percentiles)
| 15.5, 19.0 |
| Mean tumor size in mm (10th and 90th percentile)
| 14.0, 22.1 |
| Median tumor size in mm (Median - 50th percentile)
| 14.0 |
| Median tumor size in mm (25th, 75th percentiles)
| 12, 15 |
| Median tumor size in mm (10th, 90th percentiles)
| 11.5, 17 |
| %Minimal cancer
| 52.6 |
| Readers with 15+ cancers (DCIS/invasive size known)
| 275 |
| Minimal cancers
| 6,823 |
| Total cancers (DCIS/invasive size known)
| 12,972 |
| %Minimal cancer (Median - 50th percentile)
| 52.9 |
| %Minimal cancer (25th, 75th percentiles)
| 45.0, 59.4 |
| %Minimal cancer (10th, 90th percentiles)
| 37.1, 65.1 |
| %Node negative (invasive cancers only)
| 77.3 |
| Readers with 15+ invasive cancers (known nodal status)
| 244 |
| Node negative invasive cancers
| 7,510 |
| Total invasive cancers (known nodal status)
| 9,713 |
| %Node negative cancer (Median - 50th percentile)
| 78.0 |
| %Node negative cancer (25th, 75th percentiles)
| 71.8, 82.6 |
| %Node negative cancer (10th, 90th percentiles)
| 65.9, 87.8 |
| %Stage 0 or I
| 74.8 |
| Readers with 15+ cancers (known stage)
| 269 |
| Stage 0 or I cancers
| 9,391 |
| Total cancers (known stage)
| 12,551 |
| %Stage 0 or I cancer (Median - 50th percentile)
| 75.0 |
| %Stage 0 or I cancer (25th, 75th percentiles)
| 68.8, 81.0 |
| %Stage 0 or I cancer (10th, 90th percentiles)
| 64.2, 86.0 |
* Includes examinations for radiologists with minimum numbers of cases in a given column as designated;
excludes examinations for which the radiologist is unknown
† The number of radiologists in this column does not equal the sum of radiologists in the other column
because a given radiologist may contribute to each of the preceding columns, but may contribute to this column only once
‡ Minimal cancer = DCIS or invasive cancer ≤ 10 mm
The following source must be cited when reproducing this table: NCI-funded Breast
Cancer Surveillance Consortium co-operative agreement (U01CA63740, U01CA86076, U01CA86082,
U01CA63736, U01CA70013, U01CA69976, U01CA63731, U01CA70040). Downloaded xx/xx/xx from the
Breast Cancer Surveillance Consortium Web site - http://breastscreening.cancer.gov/data/benchmarks/screening/table6.html
[Return to Performance Benchmarks for Screening Mammography]
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