Table I.
Characteristics of LPL/WM cases and controls
| LPL/WM cases (n=693) | Controls (n=200,000) | |
|---|---|---|
| Gender | ||
| Male | 328 (47.3%) | 106172 (53.1%) |
| Female | 365 (52.3%) | 93828 (46.9%) |
| Age, years | ||
| 66-69 | 99 (14.3%) | 33780 (16.9%) |
| 70-74 | 149 (21.5%) | 52008 (26%) |
| 75-79 | 200 (28.9%) | 50440 (25.2%) |
| 80-84 | 140 (20.2%) | 36097 (18%) |
| 85+ | 105 (15.2%) | 27675 (13.8%) |
| Selection year | ||
| 1992-1994 | 91 (13.1%) | 31364 (15.7%) |
| 1995-1998 | 127 (18.3%) | 39843 (19.9%) |
| 1999-2005 | 475 (68.5%) | 128793 (64.4%) |
| Race/ethnicity | ||
| Non-Hispanic White | 625 (90.2%) | 166827 (83.4%) |
| Non-Hispanic Black | 30 (4.3%) | 13949 (7%) |
| Other | 38 (5.5%) | 19223 (9.6%) |
| Duration of Medicare coverage, months | ||
| 13-60 | 183 (26.4%) | 57440 (28.7%) |
| 61-120 | 306 (44.2%) | 97485 (48.7%) |
| 121-180 | 158 (22.8%) | 35805 (17.9%) |
| 181-240 | 46 (6.6%) | 9270 (4.6%) |
Abbreviations: LPL/WM: Lymphoplasmacytic Lymphoma/Waldenström Macroglobulinaemia