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Table 1 Among the female SEER-Medicare breast cancer cohorta (2005–2009; N = 56,449), median and interquartile range (IQR) per capita costs for women within the diagnostic/preoperative window (N = 53,653) by patient characteristics, with and without breast MRI

From: Costs of diagnostic and preoperative workup with and without breast MRI in older women with a breast cancer diagnosis

  Total Median Costs     MRI   No MRI  
(N = 53,653) (N = 10,776) (N = 42,877)
Characteristicsb of women N % Median IQR ($) Median IQR ($) Median IQR ($)
Total 53,653 100 % $1,353 (818–2,042) $2,251 (1,783–2,971) $1,152 (708–1,727)
Age at diagnosis (yrs.)         
 66–69 11,130 21 % $1,553 (969–2,268) $2,307 (1,810–3,097) $1,241 (778–1,821)
 70–74 13,949 26 % $1,447 (892–2,146) $2,271 (1,806–3,045) $1,211 (760–1,781)
 75–79 12,713 24 % $1,362 (837–2,036) $2,223 (1,759–2,934) $1,178 (733–1,767)
 80–84 9,633 18 % $1,220 (734–1,871) $2,201 (1,733–2,742) $1,082 (668–1,654)
 85+ 6,228 12 % $1,024 (608–1,625) $2,057 (1,660–2,687) $948 (576–1,459)
Race         
 White 47,150 89 % $1,360 (827–2,046) $2,243 (1,785–2,955) $1,154 (711–1,722)
 Black 3,732 7 % $1,293 (757–1,946) $2,272 (1,674–3,288) $1,162 (697–1,779)
 Otherc 2,741 5 % $1,317 (761–2,065) $2,331 (1,799–3,025) $1,099 (677–1,711)
Residential location         
 Urban 48,332 90 % $1,368 (829–2,071) $2,264 (1,796–2,986) $1,154 (717–1,732)
 Rural 5,311 10 % $1,224 (672–1,790) $2,040 (1,603–2,708) $1,134 (613–1,686)
Census Tract Median Income Quartiles         
 1st (<=$36,000) 13,336 25 % $1,216 (697–1,818) $2,045 (1,622–2,652) $1,106 (637–1,674)
 2nd ($36,001–$47,500) 13,345 25 % $1,287 (781–1,985) $2,216 (1,751–2,942) $1,123 (695–1,709)
 3rd ($47,501–$64,700) 13,409 25 % $1,385 (852–2,094) $2,239 (1,790–2,958) $1,168 (742–1,748)
 4th (> = $64,701) 13,065 25 % $1,538 (959–2,287) $2,387 (1,882–3,159) $1,227 (778–1,812)
Comorbidities         
 0 33,742 63 % $1,390 (847–2,088) $2,256 (1,786–2,974) $1,160 (726–1,730)
 1 12,889 24 % $1,324 (797–2,003) $2,240 (1,760–2,965) $1,157 (703–1,741)
 2+ 7,022 13 % $1,227 (712–1,894) $2,231 (1,759–2,956) $1,099 (654–1,686)
Year of Diagnosis         
 2005 10,516 20 % $1,155 (648–1,765) $2092 (1,368–2,864) $1,070 (614–1,641)
 2006 10,863 20 % $1,211 (706–1,871) $2134 (1,674–2,851) $1,074 (649–1,653)
 2007 10,645 20 % $1,268 (766–1,949) $2131 (1,687–2,805) $1,073 (674–1,585)
 2008 10,777 20 % $1,533 (966–2,188) $2285 (1,842–2,975) $1,252 (836–1,761)
 2009 10,852 20 % $1,674 (1,065–2,368) $2389 (1,904–3,171) $1,316 (924–1,966)
  1. aEnrollment based on age, fee-for-service, and equal parts A and B
  2. bMissing (N): Race (30), Residential location (20), Median income (498)
  3. cOther includes Hispanic, Asian, Native American and Other