Estimated individual and joint effects of pesticide combinations on NHL incidence*†
| Exposed [n (%)] | ||||
|---|---|---|---|---|
| Individual and joint pesticide exposures | Cases (n=650) | Controls (n=1933) | Logistic regression OR (95% CL)‡ | Hierarchical regression OR (95% CL) |
| *Effects of combined pesticide exposures were estimated in models including terms for the joint exposure, two individual exposures, the use of each other pesticide listed in table 2, age, and study site. | ||||
| †Pesticide combinations considered are listed in the appendix. | ||||
| ‡Odds ratios (OR) and 95% confidence limits (CL). | ||||
| Chlordane and DDT | ||||
| Neither | 543 | 1687 | 1.0 | 1.0 |
| Chlordane only | 9 (1.4%) | 20 (1.0%) | 1.1 (0.4 to 2.7) | 1.0 (0.5 to 1.9) |
| DDT only | 68 (10.5%) | 181 (9.4%) | 0.9 (0.6 to 1.3) | 0.9 (0.6 to 1.2) |
| Both | 30 (4.6%) | 45 (2.3%) | 1.7 (0.7 to 3.2) | 1.3 (0.8 to 2.3) |
| Carbofuran and atrazine | ||||
| Neither | 557 | 1728 | 1.0 | 1.0 |
| Carbofuran only | 3 (0.5%) | 20 (1.0%) | 0.2 (0.1 to 1.1) | 0.6 (0.3 to 1.3) |
| Atrazine only | 52 (8.0%) | 109 (5.6%) | 1.4 (0.9 to 2.2) | 1.3 (0.9 to 1.9) |
| Both | 38 (5.9%) | 76 (3.9%) | 1.6 (0.8 to 3.3) | 1.5 (0.9 to 2.7) |
| Diazinon and atrazine | ||||
| Neither | 551 | 1730 | 1.0 | 1.0 |
| Diazinon only | 9 (1.4%) | 18 (0.9%) | 1.2 (0.5 to 3.1) | 1.1 (0.5 to 2.3) |
| Atrazine only | 59 (9.1%) | 141 (7.3%) | 1.5 (1.0 to 2.3) | 1.3 (0.9 to 1.9) |
| Both | 31 (4.8%) | 44 (2.3%) | 3.9 (1.7 to 8.8) | 2.3 (1.2 to 4.2) |
| Alachlor and atrazine | ||||
| Neither | 545 | 1695 | 1.0 | 1.0 |
| Alachlor only | 15 (2.3%) | 53 (2.7%) | 0.7 (0.3 to 1.3) | 0.7 (0.4 to 1.3) |
| Atrazine only | 37 (5.7%) | 86 (4.5%) | 1.3 (0.8 to 2.1) | 1.2 (0.8 to 1.8) |
| Both | 53 (8.2%) | 99 (5.1%) | 2.1 (1.1 to 3.9) | 1.6 (1.0 to 2.7) |
| Atrazine and dicamba | ||||
| Neither | 552 | 1729 | 1.0 | 1.0 |
| Atrazine only | 59 (9.1%) | 125 (6.5%) | 1.5 (1.0 to 2.4) | 1.4 (0.9 to 2.0) |
| Dicamba only | 8 (1.2%) | 19 (1.0%) | 0.9 (0.3 to 2.6) | 1.0 (0.5 to 2.0) |
| Both | 31 (4.8%) | 60 (3.1%) | 2.1 (1.0 to 4.7) | 1.6 (0.9 to 2.9) |