Table 1.
Characteristics of study participants, Mayo Case-Control Study of NHL, 2002–2008
| Cases (N=950) | Controls (N=1146) | ||
|---|---|---|---|
| Characteristic | N (%) | N (%) | |
| Age, years | <40 | 53 (5.6) | 86 (7.5) |
| 40–49 | 126 (13.3) | 145 (12.7) | |
| 50–59 | 197 (20.7) | 232 (20.2) | |
| 60–69 | 307 (32.3) | 335 (29.2) | |
| 70+ | 267 (28.1) | 348 (30.4) | |
| Gender | Male | 550 (57.9) | 611 (53.3) |
| Race | White | 943 (99.3) | 1131 (98.7) |
| Residence | Minnesota | 636 (66.9) | 775 (67.6) |
| Iowa | 178 (18.7) | 213 (18.6) | |
| Wisconsin | 136 (14.3) | 158 (13.8) | |
| Education Level | Some High School or less | 55 (5.8) | 42 (3.7) |
| High School graduate or GED | 217 (22.8) | 262 (22.9) | |
| 1–3 yrs vocational school or some college | 273 (28.7) | 319 (27.8) | |
| College graduate | 183 (19.3) | 223 (19.5) | |
| Graduate or professional school | 171 (18.0) | 242 (21.1) | |
| Other | 51 (5.4) | 58 (5.1) | |
| Most Prevalent | CLL/SLL | 302 (31.8) | |
| NHL Subtypes | Follicular | 242 (25.5) | |
| DLBCL | 181 (19.1) | ||
| Stage | I/II | 232 (35.0) | |
| III/IV | 432 (65.0) | ||
| PS | 0–1 | 892 (95.4) | |
| 2+ | 43 (4.6) | ||
| B symptoms | no | 829 (89.3) | |
| yes | 99 (10.7) |