Table 2.
Demographic and Clinical Characteristics by Race and Treatment Modality, SEER-Medicare 2002-2006.
| AA (N = 947) |
CA (N = 10,028) |
|||||
|---|---|---|---|---|---|---|
| CRT (n = 524) | IMRT (n = 423) | CRT (n = 4,746) | IMRT (n = 5,282) | |||
| Characteristics | No. (%)a | No. (%)a | P | No. (%)a | No. (%)a | P |
| Age at diagnosis (years) | .530 | .781 | ||||
| 66-69 | 134 (52) | 122 (48) | 889 (47) | 1,018 (53) | ||
| 70-74 | 204 (56) | 158 (44) | 1,737 (48) | 1,914 (52) | ||
| ≥75 | 186 (56) | 143 (44) | 2,120 (47) | 2,350 (53) | ||
| Year of radiation | <.0001 | <.0001 | ||||
| 2002 | 196 (92) | 16 (8) | 1,845 (84) | 353 (16) | ||
| 2003 | 138 (72) | 53 (28) | 1,399 (66) | 710 (34) | ||
| 2004 | 97 (54) | 81 (46) | 837 (45) | 1,026 (55) | ||
| 2005 | 59 (33) | 121 (67) | 432 (23) | 1,444 (77) | ||
| 2006 | 34 (18) | 152 (82) | 233 (12) | 1,749 (88) | ||
| Marital status | .146 | .876 | ||||
| Married | 285 (53) | 250 (47) | 3,456 (47) | 3,839 (53) | ||
| Not married/unknown | 239 (58) | 173 (42) | 1,290 (47) | 1,443 (53) | ||
| NCI combined comorbidity score | .215 | .0003 | ||||
| 0 | 255 (53) | 223 (47) | 2,908 (46) | 3,419 (54) | ||
| >0 | 269 (57) | 200 (43) | 1,838 (50) | 1,863 (50) | ||
| % census income | .023 | <.0001 | ||||
| 0%-25% (low income) | 328 (58) | 238 (42) | 1,232 (55) | 1,024 (45) | ||
| 26%-50% (low–medium income) | 119 (57) | 90 (43) | 1,332 (51) | 1,306 (49) | ||
| 51%-75% (medium–high income) | 55 (45) | 67 (55) | 1,161 (45) | 1,406 (55) | ||
| >75% (high income) | 22 (44) | 28 (56) | 1,021 (40) | 1,546 (60) | ||
| % non–high school graduate in census tract | .127 | <.0001 | ||||
| 0%-25% (low education) | 312 (57) | 238 (43) | 1,230 (57) | 927 (43) | ||
| 26%-50% (low–medium education) | 127 (58) | 91 (42) | 1,232 (50) | 1,227 (50) | ||
| 51%-75% (medium–high education) | 62 (48) | 67 (52) | 1,247 (45) | 1,509 (55) | ||
| >75% (high education) | 23 (46) | 27 ( 54) | 1,037 (39) | 1,619 (61) | ||
| Population density | .007 | <.0001 | ||||
| Urban | 506 (56) | 392 (44) | 4,011 (45) | 4,834 (55) | ||
| Rural | 18 (37) | 31 (63) | 735 (62) | 448 (38) | ||
| Tumor grade | <.0001 | <.0001 | ||||
| I | 237 (50) | 241 (50) | 1,850 (41) | 2,657 (59) | ||
| II | 274 (62) | 169 (38) | 2,685 (52) | 2,442 (48) | ||
| III/IV | 13 (50) | 13 (50) | 211 (54) | 183 (46) | ||
| Clinical stage | .0003 | <.0001 | ||||
| T1/T2 | 313 (60) | 203 (39) | 2,883 (61) | 3,240 (52) | ||
| T3/T4 | 211 (49) | 220 (51) | 1,863 (39) | 2,989 (48) | ||
| Geographic region | <.0001 | <.0001 | ||||
| South | 133 (53) | 119 (47) | 900 (56) | 704 (44) | ||
| Northeast | 133 (48) | 147 (52) | 1,086 (38) | 1,785 (62) | ||
| Central | 193 (71) | 79 (29) | 1,263 (60) | 845 (40) | ||
| West | 65 (45) | 78 (55) | 1,497 (43) | 1,948 (57) | ||
Note. SEER = Surveillance, Epidemiology, and End Results; AA = African American; CA = Caucasian; NCI = National Cancer Institute; IMRT = intensity-modulated radiation therapy; CRT = conformal radiation therapy. SEER sites were grouped into four geographic regions for analysis.
a
Determined using the chi-square test.