Characteristics of study participants
| Characteristic . | Patients . | Controls . |
|---|---|---|
| No. | 458 | 484 |
| Age, no. (%) | ||
| Younger than 40 y | 32 (7.0) | 29 (6.0) |
| 40-49 y | 78 (17.0) | 54 (11.2) |
| 50-59 y | 83 (18.1) | 103 (21.3) |
| 60-69 y | 143 (31.2) | 139 (28.7) |
| 70 y and older | 122 (26.6) | 159 (32.9) |
| Age, mean y (± SD) | 60.0 (± 13.6) | 61.6 (± 12.9) |
| Sex, no. (%) | ||
| Male | 265 (57.9) | 264 (54.5) |
| Female | 193 (42.1) | 220 (45.5) |
| Residence, no. (%) | ||
| Minnesota | 299 (65.3) | 327 (67.6) |
| Iowa | 90 (19.7) | 88 (18.2) |
| Wisconsin | 69 (15.1) | 69 (14.3) |
| Education level, no. (%) | ||
| Less than high school graduate | 21 (5.9) | 23 (5.4) |
| High school graduate/GED | 93 (26.1) | 93 (22.0) |
| Vocational/other postsecondary school | 62 (17.4) | 72 (17.0) |
| Some college/college graduate | 129 (36.2) | 149 (35.2) |
| Graduate or professional school | 51 (14.3) | 86 (20.3) |
| Missing | 102 | 61 |
| Family history of NHL, no. (%) | ||
| No | 339 (95.0) | 406 (97.1) |
| Yes | 18 (5.0) | 12 (2.9) |
| Missing | 101 | 66 |
| NHL subtype, no. (%) | ||
| SLL/CLL | 126 (27.5) | NA |
| Follicular | 113 (24.7) | NA |
| DLBCL | 76 (16.6) | NA |
| Marginal zone | 31 (6.8) | NA |
| Mantle cell | 25 (5.5) | NA |
| T-cell | 17 (3.7) | NA |
| Other/NOS | 70 (15.3) | NA |
| Characteristic . | Patients . | Controls . |
|---|---|---|
| No. | 458 | 484 |
| Age, no. (%) | ||
| Younger than 40 y | 32 (7.0) | 29 (6.0) |
| 40-49 y | 78 (17.0) | 54 (11.2) |
| 50-59 y | 83 (18.1) | 103 (21.3) |
| 60-69 y | 143 (31.2) | 139 (28.7) |
| 70 y and older | 122 (26.6) | 159 (32.9) |
| Age, mean y (± SD) | 60.0 (± 13.6) | 61.6 (± 12.9) |
| Sex, no. (%) | ||
| Male | 265 (57.9) | 264 (54.5) |
| Female | 193 (42.1) | 220 (45.5) |
| Residence, no. (%) | ||
| Minnesota | 299 (65.3) | 327 (67.6) |
| Iowa | 90 (19.7) | 88 (18.2) |
| Wisconsin | 69 (15.1) | 69 (14.3) |
| Education level, no. (%) | ||
| Less than high school graduate | 21 (5.9) | 23 (5.4) |
| High school graduate/GED | 93 (26.1) | 93 (22.0) |
| Vocational/other postsecondary school | 62 (17.4) | 72 (17.0) |
| Some college/college graduate | 129 (36.2) | 149 (35.2) |
| Graduate or professional school | 51 (14.3) | 86 (20.3) |
| Missing | 102 | 61 |
| Family history of NHL, no. (%) | ||
| No | 339 (95.0) | 406 (97.1) |
| Yes | 18 (5.0) | 12 (2.9) |
| Missing | 101 | 66 |
| NHL subtype, no. (%) | ||
| SLL/CLL | 126 (27.5) | NA |
| Follicular | 113 (24.7) | NA |
| DLBCL | 76 (16.6) | NA |
| Marginal zone | 31 (6.8) | NA |
| Mantle cell | 25 (5.5) | NA |
| T-cell | 17 (3.7) | NA |
| Other/NOS | 70 (15.3) | NA |
GED indicates general equivalency diploma; NA, not applicable; and NOS, not otherwise specified.