Table 3.
Screening MRI Trends in Women 20–64 years old with prior breast cancer by BRCA status
| % Populationa | % with MRI | % all MRIs | MRI Rate per 10,000 | Average Percent Change Per Year (95% CI) | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2006 | 2008 | 2016 | 2006– 2016 | 2006 −2008 | 2008–2016 | ||||
| Women with BRCA Mutation | <1% | 16% | 4% | 675.0 | 1056.6 | 702.5 | 0.8% (−4,6%) b | 23% (−6,62%) b | −4% (−7,−1%) |
| 30–39 years | <1% | 11% | 1% | 863.5 | 1379.0 | 242.8 | −6% (−15,3%)b | −6% (−15,3%)b | −6% (−15,3%)b |
| 40–49 years | <1% | 12% | 1% | 300.9 | 887.8 | 607.6 | 7% (−2,17%)b | 82% (8,206%) | −6% (−12,−1%) |
| 50–64 years | <1% | 18% | 2% | 862.0 | 989.6 | 1073.7 | 0.2% (−2,3%)b | 0.2% (−2,3%)b | 0.2% (−2,3%)b |
| Women without BRCA Mutation | 1% | 6% | 36% | 181.3 | 396.3 | 322.9 | 5% (4,7%) | 46% (33, 61%) | −3% (−4,−2%) |
| 30–39 years | <1% | 8% | 2% | 351.9 | 687.0 | 590.2 | 4% (−0.1,7%)b | 35% (10,66%) | −3% (−5,−0.9%) |
| 40–49 years | <1% | 7% | 10% | 315.7 | 662.5 | 504.6 | 4% (0.2,9%) | 42% (13,78%) | −4% (−6,−1%) |
| 50–64 years | <1% | 5% | 24% | 144.8 | 325.5 | 272.2 | 6% (4,9%) | 49% (30,72%) | −3% (−4.−1%) |
a
Age group percentages do not add up to totals since this is a rolling cohort of women.
b
Indicates a non-statistically significant change in rate, with the 95% confidence interval including zero.