Table 1. Baseline Patient Characteristics.
| Characteristic | Patients, No. (%) | |
|---|---|---|
| Nonexpansion states (n = 234 472) | Combined expansion states (n = 289 330) | |
| Primary cancer site | ||
| Breast | 117 751 (50.2) | 155 521 (53.8) |
| Colorectal | 50 927 (21.7) | 60 793 (21.0) |
| Lung | 65 794 (28.1) | 73 016 (25.2) |
| Race/ethnicity | ||
| White | 169 258 (72.2) | 215 058 (74.3) |
| Black | 43 120 (18.4) | 31 001 (10.7) |
| Hispanic | 14 049 (6.0) | 20 296 (7.0) |
| Other | 8045 (3.4) | 22 975 (7.9) |
| Female | 169 130 (72.1) | 216 609 (74.9) |
| Age, y | ||
| 40-44 | 19 686 (8.4) | 24 956 (8.6) |
| 45-49 | 32 517 (13.9) | 41 742 (14.4) |
| 50-54 | 50 490 (21.5) | 62 874 (21.7) |
| 55-59 | 62 445 (26.6) | 75 271 (26.0) |
| 60-64 | 69 334 (29.6) | 84 487 (29.2) |
| Cancer stage at diagnosis | ||
| I | 80 787 (34.5) | 109 598 (37.9) |
| II | 56 555 (24.1) | 69 226 (23.9) |
| III | 42 957 (18.3) | 49 844 (17.2) |
| IV | 54 173 (23.1) | 60 662 (21.0) |
| Insurance type | ||
| Not insured | 21 083 (9.0) | 9899 (3.4) |
| Private | 154 318 (65.8) | 203 633 (70.4) |
| Medicaid | 25 367 (10.8) | 44 075 (15.2) |
| Medicare | 27 342 (11.7) | 28 327 (9.8) |
| Other government | 6362 (2.7) | 3396 (1.2) |
| Urban location | 228 512 (97.5) | 285 786 (98.8) |
| Charlson Comorbidity Index score | ||
| 0 | 178 554 (76.2) | 229 702 (79.4) |
| 1 | 42 135 (18.0) | 45 082 (15.6) |
| 2 | 9822 (4.2) | 10 322 (3.6) |
| ≥3 | 3961 (1.7) | 4224 (1.5) |
| Median income by zip code, $ | ||
| <38 000 | 58 235 (24.8) | 36 961 (12.8) |
| 38 000-47 999 | 62 683 (26.7) | 52 709 (18.2) |
| 48 000-62 999 | 58 567 (25.0) | 75 403 (26.1) |
| ≥63 000 | 54 696 (23.3) | 123 802 (42.8) |
| Missing | 291 (0.1) | 455 (0.2) |
| Less than high school education by zip code, % | ||
| ≥21.0 | 54 118 (23.1) | 46 582 (16.1) |
| 13.0-20.9 | 68 619 (29.3) | 66 977 (23.1) |
| 7.0-12.9 | 66 303 (28.3) | 95 490 (33.0) |
| <7.0 | 45 220 (19.3) | 79 946 (27.6) |
| Missing | 212 (0.1) | 335 (0.1) |