Table 3. Receipt of chemotherapy by patient, area level and facility characteristics.
| Patient Characteristics | Chemotherapy Alone
(%) (n=19,078) |
Chemo-immunotherapy
(%) (n=10,234) |
|---|---|---|
| Median age years (IQR) | 66 (52-76) | 66 (52-76) |
| Age >60 years | 11924 (62.5) | 6409 (62.62) |
| Sex, female | 8950 (46.91) | 4780 (46.71) |
| Race/Ethnicity | ||
| White | 15710 (82.35) | 8759 (85.59) |
| Hispanic | 1035 (5.43) | 499 (4.88) |
| Black | 1711 (8.97) | 644 (6.29) |
| Other | 622 (3.26) | 332 (3.24) |
| Unknown | 0 | 0 |
| Stage | ||
| I/II | 8793 (46.09) | 4524 (44.21) |
| III/IV | 7659 (40.15) | 5083 (49.67) |
| Unknown | 2626 (13.76) | 627 (6.13) |
| Diagnosis Year | ||
| 2001 | 5585 (29.27) | 1414 (13.82) |
| 2002 | 4222 (22.13) | 2227 (21.76) |
| 2003 | 4615 (24.19) | 3175 (31.02) |
| 2004 | 4656 (24.41) | 3418 (33.4) |
| Primary Site | ||
| Lymph node | 11742 (61.55) | 6949 (67.9) |
| Extra-nodal | 7336 (38.45) | 3285 (32.1) |
| Primary payer | ||
| Uninsured | 804 (4.21) | 332 (3.24) |
| Medicaid | 1146 (6.01) | 532 (5.2) |
| Medicare 18-64 | 657 (3.44) | 300 (2.93) |
| Medicare ≥65 | 8535 (44.74) | 4660 (45.53) |
| Private | 7936 (41.6) | 4410 (43.09) |
| Region | ||
| Northeast | 4180 (21.91) | 2507 (24.5) |
| Midwest | 4980 (26.1) | 2859 (27.94) |
| South | 7068 (37.05) | 2951 (28.84) |
| West | 2850 (14.94) | 1917 (18.73) |
| Median No High School | ||
| ≥29% | 3207 (16.81) | 1269 (12.4) |
| 20-28.9% | 4188 (21.95) | 2128 (20.79) |
| 14-19.9% | 4393 (23.03) | 2389 (23.34) |
| <14% | 6156 (32.27) | 3836 (37.48) |
| Missing | 1134 (5.94) | 612 (5.98) |
| Facility Characteristics | ||
| High Volume Community | 2370 (12.42) | 964 (9.42) |
| High Volume Comprehensive | 5697 (29.86) | 3493 (34.13) |
| High Volume Tch/Research | 4814 (25.23) | 3359 (32.82) |
| Low Volume Community | 850 (4.46) | 257 (2.51) |
| Low Volume Comprehensive | 2790 (14.62) | 1071 (10.47) |
| Low Volume Tch/Research | 1922 (10.07) | 637 (6.22) |
| Missing facility type | 635 (3.33) | 453 (4.43) |