Table 2

Characteristics of cases and controls in the International Lymphoma Epidemiology study of herbicides (n (%))

ControlsCases
N=9626N=9229
Age (years)
 <451692 (17.6)1306 (14.1)
 45–541726 (17.9)1716 (18.6)
 55–642472 (25.7)2566 (27.8)
 65–742886 (30.0)2849 (30.9)
 ≥75850 (8.8)792 (8.6)
Gender
 Female4597 (47.8)4195 (45.4)
 Male5029 (52.2)5034 (54.6)
Race/Hispanic ethnicity*
 White, non-Hispanic8928 (92.8)8471 (91.8)
 Black244 (2.5)226 (2.5)
 Other non-white or Hispanic416 (4.3)483 (5.2)
 Missing38 (0.4)49 (0.5)
Socioeconomic status
 Low3614 (37.6)3827 (41.5)
 Medium3170 (32.9)2754 (29.8)
 High2762 (28.7)2203 (23.9)
 Missing80 (0.8)445 (4.8)
Job history (ever)
 Farming1492 (15.5)1526 (16.5)
 Forestry65 (1.0)69 (1.1)
 Gardener/Groundskeeper74 (1.0)93 (1.3)
 Janitor/Cleaner344 (4.8)400 (5.7)
 General labourer460 (4.8)532 (5.8)
Occupational pesticide use (ever)
 Any†1201 (12.5)1263 (13.7)
 Insecticide639 (6.6)669 (7.2)
 Herbicide596 (6.2)644 (7.0)
  • *White category includes ‘assumed white’, based on region and/or ethnicity (<2% of study population).

  • †Occupational use of any type of pesticide including insecticides, herbicides, fungicides, fumigants, rodenticides, etc.