Table 1.
Characteristics of Study Groups
| IPCC | HRR-Control | State-Control | |||||
|---|---|---|---|---|---|---|---|
| N | (%) | N | (%) | N | %) | P value | |
| All patients | 545 | (100) | 279 | (100) | 3,156 | (100) | |
| Time Period | |||||||
| 18 mo pre- | 284 | (52.1) | 140 | (50.2) | 1652 | (52.3) | |
| 18 mo post- | 261 | (47.9) | 139 | (49.8) | 1504 | (47.7) | 0.79 |
| Age at Diagnosis (years) | |||||||
| 65 to 74 | 322 | (59.1) | 160 | (57.3) | 1815 | (57.5) | |
| 75 and older | 223 | (40.9) | 119 | (42.7) | 1341 | (42.5) | 0.27 |
| Race | |||||||
| White | 423 | (77.6) | 181 | (64.9) | 2408 | (76.3) | |
| Non-white* | 122 | (22.4) | 98 | (35.1) | 748 | (23.7) | <0.001 |
| Marital Status | |||||||
| Married | 399 | (73.2) | 191 | (68.5) | 2148 | (68.1) | |
| Not married** | 146 | (26.8) | 88 | (31.5) | 1008 | (31.9) | <0.001 |
| NCCN Risk Group | |||||||
| Low | 157 | (28.8) | 53 | (19) | 918 | (29.1) | |
| Intermediate | 195 | (35.8) | 92 | (33) | 767 | (24.3) | |
| High | 173 | (31.7) | 115 | (41.2) | 1008 | (31.9) | |
| Unknown | 20 | (3.7) | 19 | (6.8) | 463 | (14.7) | <0.001 |
| Comorbidity Index¥ | |||||||
| 0 | 64 | (11.7) | 61 | (21.9) | 436 | (13.8) | |
| 1 | 134 | (24.6) | 69 | (24.7) | 709 | (22.5) | |
| ≥ 2 | 347 | (63.7) | 149 | (53.4) | 2011 | (63.7) | 0.001 |
| Median Household Income in Census Tract of Residence (US$) | |||||||
| 25,000 or less | 147 | (27) | 93 | (33.3) | 713 | (22.6) | |
| > 25,000 to 40,000 | 243 | (44.6) | 124 | (44.4) | 1539 | (48.8) | |
| > 40,000§ | 155 | (28.4) | 62 | (22.2) | 904 | (28.6) | 0.003 |
*
97% (943/968) of non-white patients in the cohort were Black.
**
< 9% of patients had unknown race (analyzed as dummy category in regression models but masked in Table 1 per SEER-Medicare confidentiality restrictions as some cell sizes < 11).
¥
Comorbidity score of ≥ 2 represents highest level of comorbidity.
§
< 1% of patients had unknown median household income (analyzed as dummy category in regression models but masked in Table 1 per SEER-Medicare confidentiality restrictions as some cell sizes < 11).