Table 2.
Screening MRI Trends in Women 20–64 years old, by Age and Risk Subgroup
| % 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 | ||||
| 100% | <1% | 100% | 2.9 | 6.7 | 12.1 | 14% (11,18%) | 45% (23,72%) | 7% (5,9%) | |
| 20–29 years | 26% | <1% | 2% | 0.5 | 0.6 | 1.3 | 13% (7,19%) | 28% (8,52%) | 9% (5,13%) |
| 30–39 years | 29% | <1% | 10% | 1.6 | 4.3 | 7.4 | 15% (9,21%) | 58% (17,112%) | 6% (3,10%) |
| 40–49 years | 29% | <1% | 35% | 4.7 | 10.7 | 19.0 | 14% (12,17%) | 46% (27,68%) | 7% (6,9%) |
| 50–64 years | 33% | <1% | 53% | 3.9 | 9.2 | 17.1 | 14% (10,18%) | 42% (17,73%) | 7% (5,10%) |
| BRCA Mutation | <1% | 20% | 9% | 210.8 | 534.7 | 1562.0 | 21% (16,26%) | 59% (24,103%) | 13% (10,16%) |
| 20–29 years | <1% | 12% | <1% | 89.2 | 333.5 | 1198.4 | 30% (14,49%) | 97% (−9,328%)b | 18% (8,28%) |
| 30–39 years | <1% | 14% | 2% | 175.0 | 532.6 | 1519.1 | 24% (13,35%) | 74% (5,186%) | 13% (7,20%) |
| 40–49 years | <1% | 17% | 3% | 216.7 | 592.0 | 1567.2 | 22% (15,29%) | 70% (22,137%) | 12% (8,16%) |
| 50–64 years | <1% | 20% | 4% | 256.7 | 535.8 | 1669.6 | 16% (12,20%) | 16% (12,20%) | 16% (12,20%) |
| Family History | 5% | 2% | 38% | 62.3 | 116.6 | 131.0 | 6% (1,11%) | 29% (0,66%) | 1% (−2,4%) b |
| 20–29 years | <1% | 1% | 1% | 71.8 | 43.9 | 24.4 | −6% (−11,−1%) | −6% (−11,−1%) | −6% (−11,−1%) |
| 30–39 years | <1% | 2% | 5% | 63.4 | 124.4 | 131.7 | 6% (0,13%)b | 37% (−5,98%)b | 0% (−4,4%)b |
| 40–49 years | 2% | 2% | 15% | 76.8 | 145.8 | 167.9 | 7% (2,12%) | 31% (−1,72%)b | 2% (−1,5%)b |
| 50–64 years | 3% | 2% | 17% | 53.3 | 103.5 | 117.5 | 4% (−1,8%)b | 4% (−1,8%)b | 4% (−1,8%)b |
| Prior Breast Cancer | 2% | 6% | 40% | 191.8 | 415.6 | 355.3 | 6% (4,8%) | 46% (33,59%) | −2% (−3,−1%) |
| 30–39 years | <1% | 8% | 2% | 387.1 | 786.4 | 543.6 | 3% (−1,8%)b | 38% (8,75%) | −4% (−7,−2%) |
| 40–49 years | <1% | 7% | 12% | 323.7 | 668.1 | 519.5 | 5% (1,8%) | 42% (18,71%) | −3% (−5,−1%) |
| 50–64 years | 1% | 5% | 26% | 151.2 | 337.8 | 307.0 | 7% (5,9%) | 49% (34,65%) | −2% (−3,−1%) |
| Other | 97% | <1% | 13% | 1.3 | 2.4 | 1.9 | 1% (−2, 5%) b | 1% (−2,5%) b | 1% (−2,5%) b |
| 20–29 years | 26% | <1% | <1% | 0.1 | 0.2 | 0.2 | −1% (−11, 10%)b | −1% (−11, 10%)b | −1% (−11, 10%)b |
| 30–39 years | 28% | <1% | 1% | 0.6 | 1.2 | 0.7 | −1%(−6,4%)b | −1% (−6,4%)b | −1% (−6,4%)b |
| 40–49 years | 28% | <1% | 5% | 2.2 | 3.8 | 3.0 | 2%(−2,7)b | 22% (−4,57%)b | −2% (−5,0.4%)b |
| 50–64 years | 31% | <1% | 7% | 1.9 | 3.7 | 3.2 | 2% −2,6%)b | 2% (−2,6%)b | 2% (−5,6%)b |
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.