Table 2.
Characteristics of women included in the pooled analysis
| Cases, n (%) | Controls, n (%) | |
|---|---|---|
| NHL subtype | 4263 (100) | – |
| Diffuse large B-cell lymphoma | 1354 (32) | – |
| Follicular lymphoma | 1055 (25) | – |
| Chronic lymphocytic lymphoma/small lymphocytic lymphoma | 432 (10) | |
| Marginal zone B-cell lymphoma | 388 (9) | |
| Other B-cell lymphoma | 232 (5) | – |
| T-cell lymphoma | 221 (5) | – |
| Unclassified | 581 (14) | – |
| Age | 4263 (100) | 5971 (100) |
| ≤55 | 1640 (38) | 2473 (41) |
| 56–65 | 1177 (28) | 1513 (25) |
| >65 | 1446 (34) | 1985 (33) |
| Year of birth | 4263 (100) | 5971 (100) |
| Before 1920 | 234 (5) | 324 (5) |
| 1920–1929 | 933 (22) | 1260 (21) |
| 1930–1939 | 1133 (27) | 1493 (25) |
| 1940–1949 | 979 (23) | 1347 (23) |
| 1950–1959 | 589 (14) | 784 (13) |
| 1960 or later | 395 (9) | 763 (13) |
| Ethnicity | 4263 (100) | 5971 (100) |
| Caucasian | 3698 (87) | 4974 (83) |
| Asian | 384 (9) | 765 (13) |
| Afro-Caribbean | 103 (2) | 147 (2) |
| Mixed, other or not known | 78 (2) | 85 (1) |
| Socioeconomic statusa | 3336 (100) | 4568 (100) |
| High | 849 (25) | 1293 (28) |
| Medium | 1138 (34) | 1642 (36) |
| Low | 1338 (40) | 1625 (36) |
| Not known | 11 (0.3) | 8 (0.2) |
aSocioeconomic status data were collected from 15 studies (NCI-SEER, Nebraska, Mayo, UCSF, Los Angeles, British Columbia, UK, EpiLymph studies, North Italy and Italy).