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.