Table 1.
Sociodemographic and clinical characteristics of patients at time of cancer diagnosisa
| Characteristic | All (N = 17,457) |
Cohort
|
P | |
|---|---|---|---|---|
| No Follow-up (n = 16,416) |
Follow-up (n = 1041) |
|||
| Age group, y | .256 | |||
| 67-75 | 7175 (41.1) | 6825 (41.6) | 350 (33.6) | |
| 76-84 | 7388 (42.3) | 6868 (41.8) | 520 (49.9) | |
| ≥ 85 | 2894 (16.6) | 2723 (16.6) | 171 (16.4) | |
| Men | 8620 (49.4) | 8050 (49.0) | 570 (54.8) | < .001 |
| Race | .219 | |||
| White | 14,152 (80.9) | 13,284 (81.0) | 868 (83.4) | |
| Black | 2270 (13.1) | 2142 (13.1) | 128 (12.3) | |
| Asian | 382 (2.2) | 364 (2.2) | 18 (1.7) | |
| Hispanic | 326 (1.9) | 313 (1.9) | 13 (1.3) | |
| American Indian/Alaska native | 53 (0.3) | ____b | ____b | |
| Other | 240 (1.4) | 230 (1.4) | 10 (1.0) | |
| Unknown | 34 (0.2) | ____b | ____b | |
| Ethnicity | .113 | |||
| Hispanic | 887 (5.1) | 845 (5.1) | 42 (4.0) | |
| Non-Hispanic | 16,570 (94.9) | 15,571 (94.9) | 999 (96.0) | |
| Residence at time of diagnosis | .624 | |||
| Large metropolitan | 10,153 (58.2) | 9557 (58.2) | 596 (57.3) | |
| Metropolitan | 4677 (26.8) | 4380 (26.7) | 297 (28.5) | |
| Urban | 972 (5.6) | 916 (5.6) | 56 (5.4) | |
| Less urban | 1362 (7.8) | 1283 (7.8) | 79 (7.6) | |
| Rural | ____b | ____b | ____b | |
| Unknown | ____b | ____b | ____b | |
| Median annual household income | .688 | |||
| ≤ $25,000 | 1579 (9.1) | 1483 (9.0) | 96 (9.2) | |
| $25,001-$45,000 | 7008 (40.1) | 6601 (40.2) | 407 (39.1) | |
| $45,001-$65,000 | 5131 (29.4) | 4836 (29.5) | 295 (28.3) | |
| $65,001-$85,000 | 2265 (13.0) | 2122 (12.9) | 143 (13.7) | |
| > $85,000 | 1364 (7.8) | ____b | ____b | |
| Not available | 110 (0.6) | ____b | ____b | |
| Comorbidity score | .036 | |||
| 0 | 12,054 (69.1) | 11,375 (69.3) | 679 (65.2) | |
| 1 | 2817 (16.1) | 2636 (16.1) | 181 (17.4) | |
| 2 | 1348 (7.7) | 1256 (7.6) | 92 (8.8) | |
| ≥3 | 1238 (7.1) | 1149 (7.0) | 89 (8.6) | |
| SEER registry | .001 | |||
| Atlanta | 638 (3.7) | 605 (3.7) | 33 (3.2) | |
| Connecticut | 1508 (8.6) | 1407 (8.6) | 101 (9.7) | |
| Detroit | 2012 (11.5) | 1888 (11.5) | 124 (11.9) | |
| Greater California | 2033 (11.7) | 1915 (11.7) | 118 (11.3) | |
| Hawaii | 216 (1.2) | ____b | ____b | |
| Iowa | 1621 (9.3) | 1520 (9.3) | 101 (9.7) | |
| Kentucky | 964 (5.5) | 912 (5.6) | 52 (5.0) | |
| Los Angeles | 1613 (9.2) | 1542 (9.4) | 71 (6.8) | |
| Louisiana | 970 (5.6) | 914 (5.6) | 56 (5.4) | |
| New Jersey | 2142 (12.3) | 2011 (12.3) | 131 (12.6) | |
| New Mexico | 476 (2.7) | 452 (2.8) | 24 (2.3) | |
| Rural Georgia | 49 (0.3) | ____b | ____b | |
| San Francisco | 785 (4.5) | 745 (4.5) | 40 (3.8) | |
| San Jose | 498 (2.8) | 477 (2.9) | 21 (2.0) | |
| Seattle | 1340 (7.7) | 1219 (7.4) | 121 (11.6) | |
| Utah | 592 (3.4) | 560 (3.4) | 32 (3.1) | |
| Cancer type | < .001 | |||
| Lymphoplasmacytic lymphoma | 747 (4.3) | 701 (4.3) | 46 (4.4) | |
| Multiple myeloma | 15,664 (89.7) | 14,769 (90.0) | 895 (86.0) | |
| Waldenström macroglobulinemia | 1046 (6.0) | 946 (5.8) | 100 (9.6) | |
| Year of cancer diagnosis | < .001 | |||
| 1994-1999 | 4744 (27.2) | 4551 (27.7) | 193 (18.5) | |
| 2000-2007 | 12,713 (72.8) | 11,865 (72.3) | 848 (81.5) | |
Abbreviation: SEER = Surveillance, Epidemiology, and End Results.
a
All statistical tests were 2-sided. Data are presented as number of patients (%).
b
Numbers are suppressed since cell size is less than 11, per SEER-Medicare data reporting requirements.