TABLE 1.
Patient demographic and clinical characteristics, by age group
| <70 years old 102,235 (66%) |
≥70 years old 51,917 (34%) |
|
|---|---|---|
| Race, n (%) | ||
| White | 88,402 (87) | 47,096 (91) |
| Black | 82,96 (8) | 3,122 (6) |
| Asian | 3,475 (3) | 995 (2) |
| Other race | 1,207 (1) | 378 (1) |
| Missing | 855 | 326 |
| Hispanic, n (%) | 4,792 (5) | 1,443 (3) |
| Charlson score, n (%) | ||
| 0 | 87,297 (85) | 40,614 (78) |
| 1 | 12,444 (12) | 8,991 (17) |
| 2 | 2,026 (2) | 1,809 (4) |
| 3+ | 468 (1) | 503 (1) |
| Primary insurance type, n (%) | ||
| Uninsured | 1,487 (2) | 152 (<1) |
| Private insurance/managed care | 66,823 (66) | 5,435 (11) |
| Medicare/Medicaid | 32,905 (33) | 45,852 (89) |
| Missing | 1,020 | 478 |
| Residential type, n (%) | ||
| Metro | 86,293 (87) | 43,624 (86) |
| Urban | 11,807 (12) | 6,154 (12) |
| Rural | 1,396 (1) | 742 (1) |
| Missing | 2,739 | 1,397 |
| Median residential incomea, n (%) | ||
| <$38,000 | 12,275 (12) | 6,387 (12) |
| $38,000 – $47,999 | 19,997 (20) | 11,011 (21) |
| $48,000 – $62,999 | 27,377 (27) | 14,595 (28) |
| ≥$63,000 | 42,430 (42) | 19,825 (38) |
| Missing | 156 | 99 |
| Residential educational levelb, n (%) | ||
| ≥21% | 12,019 (12) | 5,615 (11) |
| 13% – 20.9% | 22,443 (22) | 11,580 (22) |
| 7% – 12.9% | 34,626 (34) | 18,384 (36) |
| <7% | 33,019 (32) | 16,265 (31) |
| Missing | 128 | 73 |
| Histologic type, n (%) | ||
| Ductal | 88,137 (86) | 42,484 (82) |
| Lobular | 9,914 (10) | 6,301 (12) |
| Special histologic subtypes | 4,184 (4) | 3,132 (6) |
| Tumor Grade, n (%) | ||
| Well differentiated; differentiated, NOS | 38,334 (38) | 20,035 (39) |
| Moderately differentiated; moderately well differentiated; intermediate differentiation | 46,725 (46) | 24,671 (48) |
| Poorly differentiated | 11,657 (11) | 4,490 (9) |
| Undifferentiated; anaplastic | 49 (<1) | 27 (<1) |
| Cell type not determined | 5,470 (5) | 2,694 (5) |
a
Median residential household income of each patient’s ZIP code was estimated using the 2012 American Community Survey
b
Proportion of adults in patient’s ZIP code who did not complete high school, measured in the 2012 American Community Survey