Demographic characteristics and MDS claims among Medicare beneficiaries by SEER registration status, 2000-2005
| Beneficiary characteristics . | MDS (n = 5493) . | Leukemia (n = 18 263) . | Other cancers (n = 44 739) . | Not registered (n = 230 941) . |
|---|---|---|---|---|
| Median age (y) in January 2001 (interquartile range) | 77 (72-82) | 75 (69-81) | 74 (68-80) | 72 (66-79) |
| Sex, n (%) | ||||
| Male | 2965 (54) | 9,692 (53) | 21 612 (48) | 88 748 (38) |
| Female | 2528 (46) | 8571 (47) | 23 127 (52) | 142 193 (62) |
| Race/ethnicity, n (%) | ||||
| White | 4885 (89) | 16 524 (90) | 39 353 (88) | 194 754 (84) |
| Black | 300 (5) | 905 (5) | 2652 (6) | 14 522 (6) |
| Other | 67 (1) | 206 (1) | 780 (2) | 5 275 (2) |
| Asian | 152 (3) | 353 (2) | 1256 (3) | 9 903 (4) |
| Hispanic | 69 (1) | 210 (1) | 543 (1) | 5156 (2) |
| North American Native | 9 (0) | 34 (0) | 95 (0) | 876 (0) |
| Unknown | 11 (0) | 31 (0) | 60 (0) | 455 (0) |
| Claims between 2001 and 2005, n (%) | ||||
| MDS or unspecified anemia claims within first data year* | 1958 (36) | 5152 (28) | 6390 (14) | 30 153 (13) |
| No MDS claims | 251 (5) | 8624 (47) | 37 109 (83) | 197 765 (86) |
| 1 or more MDS claims | 3284 (60) | 4487 (25) | 1240 (3) | 3023 (1) |
| Second MDS claim 1-12 months after first claim, death, or hospice entry within 3 months | 3050 | 3145 | 545 | 1176 |
| Second MDS claim and BC within 12 months before first claim | 3021 | 3088 | 535 | 1138 |
| Second MDS claim and BM biopsy within 12 months before first claim | 2759 | 2439 | 159 | 321 |
| Beneficiary characteristics . | MDS (n = 5493) . | Leukemia (n = 18 263) . | Other cancers (n = 44 739) . | Not registered (n = 230 941) . |
|---|---|---|---|---|
| Median age (y) in January 2001 (interquartile range) | 77 (72-82) | 75 (69-81) | 74 (68-80) | 72 (66-79) |
| Sex, n (%) | ||||
| Male | 2965 (54) | 9,692 (53) | 21 612 (48) | 88 748 (38) |
| Female | 2528 (46) | 8571 (47) | 23 127 (52) | 142 193 (62) |
| Race/ethnicity, n (%) | ||||
| White | 4885 (89) | 16 524 (90) | 39 353 (88) | 194 754 (84) |
| Black | 300 (5) | 905 (5) | 2652 (6) | 14 522 (6) |
| Other | 67 (1) | 206 (1) | 780 (2) | 5 275 (2) |
| Asian | 152 (3) | 353 (2) | 1256 (3) | 9 903 (4) |
| Hispanic | 69 (1) | 210 (1) | 543 (1) | 5156 (2) |
| North American Native | 9 (0) | 34 (0) | 95 (0) | 876 (0) |
| Unknown | 11 (0) | 31 (0) | 60 (0) | 455 (0) |
| Claims between 2001 and 2005, n (%) | ||||
| MDS or unspecified anemia claims within first data year* | 1958 (36) | 5152 (28) | 6390 (14) | 30 153 (13) |
| No MDS claims | 251 (5) | 8624 (47) | 37 109 (83) | 197 765 (86) |
| 1 or more MDS claims | 3284 (60) | 4487 (25) | 1240 (3) | 3023 (1) |
| Second MDS claim 1-12 months after first claim, death, or hospice entry within 3 months | 3050 | 3145 | 545 | 1176 |
| Second MDS claim and BC within 12 months before first claim | 3021 | 3088 | 535 | 1138 |
| Second MDS claim and BM biopsy within 12 months before first claim | 2759 | 2439 | 159 | 321 |
A person with MDS or unspecified anemia claims within the first year of claim data may be a prevalent case and therefore must be removed from the validation study and incidence estimation.