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. 2015 Nov 23;33(36):4259–4267. doi: 10.1200/JCO.2015.61.9023

Table 3.

Adjusted Mean 1-Year Health Care Spending after Breast Cancer Diagnosis, by Age and RS Testing Receipt Status

Age, years Received RS Testing Total Spending Chemotherapy Spending Nonchemotherapy Spending
Mean 1-Year Spending ($) Difference Between RS Recipients and Nonrecipients (95% CI) P Mean 1-Year Spending ($) Difference Between RS Recipients and Nonrecipients (95% CI) P Mean 1-Year Spending ($) Difference Between RS Recipients and Nonrecipients (95% CI) P
<55 Yes (n = 286) 81,334 −15,333 .002 16,101 −21,396 (−30,701 to −12,091) < .001 65,233 6,063 .04
No (n = 447) 96,667 (−27,824 to −2,841) 37,497 59,170 (305 to 11,821)
55-64 Yes (n = 317) 72,785 −1,733 .70 10,535 −9,675 .001 62,251 7,943 .006
No (n = 445) 74,518 (−10,561 to 7,095) 20,210 (−15,450 to −3,901) 54,308 (2,225 to 13,660)
65-74 Yes (n = 695) 39,090 2,442 .07 3,905 −2,171 .002 35,184 4,613 < .001
No (n = 1,831) 36,647 (−233 to 5,118) 6,076 (−3,542 to −800) 30,571 (2,514 to 6,713)
75-84 Yes (n = 300) 33,209 3,489 .009 2,093 206 .78 31,116 3,283 .001
No (n = 2,179) 29,720 (857, 6,122) 1,887 (−1,238 to 1,650) 27,832 (1,275 to 5,292)
≥85 Yes (n = 11) 32,402 9,788 .06 54 −132 .07 32,402 9,974 .054
No (n = 776) 22,614 (−375 to 19,950) 186 (−273 to 9) 22,428 (−185 to 20,132)

NOTE. Data reported are 2010 dollars.

Abbreviation: RS, 21-gene recurrence score assay.