Table 1.
Use of Hematopoietic Growth Factors for Patients With Breast Cancer in Association With Patient Characteristics, Year of Diagnosis, and Geographic Areas
| Patient and Tumor Characteristic | No. of Patients With Breast Cancer Who Received Chemotherapy | Percentage of Patients Receiving Filgrastim | Percentage of Patients Receiving Epoetin |
|---|---|---|---|
| Age, years | |||
| 65-69 | 2,780 | 17.5 | 6.9 |
| 70-74 | 1,623 | 18.9 | 7.2 |
| 75-79 | 944 | 17.9 | 6.6 |
| ≥ 80 | 496 | 9.7 | 5.2 |
| Race | |||
| White | 5,169 | 17.6 | 6.7 |
| Black | 470 | 13.0 | 7.2 |
| Other | 204 | 20.1 | 7.8 |
| Marital status | |||
| Married | 2,776 | 18.3 | 7.0 |
| Unmarried | 2,918 | 16.5 | 6.6 |
| Unknown | 149 | 14.8 | 7.4 |
| Comorbidity scores | |||
| 0 | 3,838 | 17.9 | 6.7 |
| 1 | 1,287 | 17.2 | 7.0 |
| 2 | 463 | 16.2 | 6.5 |
| ≥ 3 | 255 | 10.6 | 8.2 |
| Household income | |||
| 1st quartile (< $38,237) | 1,405 | 14.7 | 6.2 |
| 2nd quartile ($38,237-$47,459) | 1,397 | 17.1 | 5.4 |
| 3rd quartile ($47,460-$60,582) | 1,403 | 18.9 | 8.1 |
| 4th quartile (> $60,582) | 1,400 | 18.1 | 7.8 |
| Unknown/missing | 238 | 18.9 | 5.0 |
| SEER registry areas | |||
| San Francisco, CA | 389 | 21.1 | 6.9 |
| Connecticut | 901 | 13.5 | 5.7 |
| Detroit, MI | 1,020 | 19.6 | 7.1 |
| Hawaii | 87 | 11.5 | 4.6 |
| Iowa | 645 | 13.8 | 3.1 |
| New Mexico | 219 | 13.2 | 2.7 |
| Seattle, WA | 498 | 10.6 | 8.6 |
| Utah | 322 | 16.2 | 4.0 |
| Atlanta, GA | 455 | 22.9 | 11.9 |
| San Jose-Monterey, CA | 337 | 20.5 | 12.8 |
| Los Angeles, CA | 970 | 20.6 | 6.6 |
| Year of diagnosis | |||
| 1992 | 629 | 0 | 0 |
| 1993 | 560 | 3.9 | 0 |
| 1994 | 599 | 16.5 | 0.8 |
| 1995 | 658 | 17.3 | 5.2 |
| 1996 | 654 | 20.3 | 6.7 |
| 1997 | 849 | 19.4 | 7.5 |
| 1998 | 909 | 23.0 | 9.1 |
| 1999 | 985 | 27.2 | 17.0 |
| Total | 5,843 | 17.3 | 6.8 |
Abbreviation: SEER, Surveillance, Epidemiology, and End Results.