Table 1.
Selected characteristics of the Agricultural Health Study population by glyphosate use
| Lifetime days of glyphosate use† |
|||
|---|---|---|---|
| Never-used glyphosate | < Median | ≥ Median | |
| Characteristics* | No. (%) | No. (%) | No. (%) |
| Total | 9319 (100.0) | 19 714 (100.0) | 24 727 (100.0) |
| Age at enrollment, y | |||
| <30 | 814 (8.7) | 1726 (8.8) | 2372 (9.6) |
| 30–39 | 1730 (18.6) | 4293 (21.8) | 6612 (26.7) |
| 40–49 | 2217 (23.8) | 5304 (26.9) | 7437 (30.1) |
| 50–59 | 2051 (22.0) | 4261 (21.6) | 4759 (19.2) |
| 60–69 | 1797 (19.3) | 3043 (15.4) | 2738 (11.1) |
| 70+ | 710 (7.6) | 1087 (5.5) | 809 (3.3) |
| Sex | |||
| Male | 8887 (95.4) | 19 220 (97.5) | 24 203 (97.9) |
| Female | 432 (4.6) | 494 (2.5) | 524 (2.1) |
| Race | |||
| White | 8838 (94.8) | 19 128 (97.0) | 24 267 (98.1) |
| Black and other | 441 (4.7) | 538 (2.7) | 404 (1.6) |
| Missing | 40 (0.4) | 48 (0.2) | 56 (0.2) |
| State of recruitment | |||
| Iowa | 6692 (71.8) | 12 668 (64.3) | 15 756 (63.7) |
| North Carolina | 2627 (28.2) | 7046 (35.7) | 8971 (36.3) |
| Applicator type | |||
| Private (farmer) | 8476 (91.0) | 18 717 (94.9) | 21 932 (88.7) |
| Commercial | 843 (9.0) | 997 (5.1) | 2795 (11.3) |
| Highest level of education | |||
| High school or less | 6528 (70.1) | 11 409 (57.9) | 12 005 (48.6) |
| Beyond high school | 2569 (27.6) | 7884 (40.0) | 12 213 (49.2) |
| Missing | 222 (2.4) | 421 (2.1) | 509 (2.1) |
| Body mass index, kg/m2 | |||
| <25 | 1656 (17.8) | 3779 (19.2) | 4168 (16.9) |
| 25–<30 | 3044 (32.7) | 7123 (36.1) | 8492 (34.3) |
| 30+ | 1435 (15.4) | 3175 (16.1) | 3985 (16.1) |
| Missing | 3184 (34.2) | 5637 (28.6) | 8082 (32.7) |
| Cigarette smoking status | |||
| Never | 4987 (53.5) | 10 371 (52.6) | 12 876 (52.1) |
| Former | 2621 (28.1) | 6004 (30.5) | 7295 (29.5) |
| Current | 1526 (16.4) | 3147 (16.0) | 4355 (17.6) |
| Missing | 185 (2.0) | 192 (1.0) | 201 (0.8) |
| Cigarette smoking pack-years | |||
| Never | 4987 (53.5) | 10 371 (52.6) | 12 876 (52.1) |
| Former, tertile 1 | 896 (9.6) | 2004 (10.2) | 2471 (10.0) |
| Former, tertile 2 | 791 (8.5) | 1865 (9.5) | 2198 (8.9) |
| Former, tertile 3 | 741 (8.0) | 1748 (8.9) | 2109 (8.5) |
| Current, tertile 1 | 548 (5.9) | 1037 (5.3) | 1513 (6.1) |
| Current, tertile 2 | 453 (4.9) | 975 (4.9) | 1399 (5.7) |
| Current, tertile 3 | 461 (4.9) | 1076 (5.5) | 1376 (5.6) |
| Missing | 442 (4.7) | 638 (3.2) | 785 (3.2) |
| Usual number of alcohol drinks per month in year prior enrollment | |||
| Never | 3150 (33.8) | 6406 (32.5) | 6946 (28.1) |
| ≤6/mo | 3036 (32.6) | 6646 (33.7) | 8240 (33.3) |
| ≥7/mo | 2492 (26.7) | 5631 (28.6) | 8646 (35.0) |
| Missing | 641 (6.9) | 1030 (5.2) | 895 (3.6) |
| Family history of cancer | |||
| No | 5452 (58.5) | 10 846 (55.0) | 13 866 (56.1) |
| Yes | 3226 (34.6) | 7700 (39.1) | 9876 (39.9) |
| Missing | 641 (6.9) | 1168 (5.9) | 985 (4.0) |
*
Data from the enrollment questionnaire.
†
Based on median cumulative lifetime days of glyphosate use among all cancer cases (38.75 days)