Table 8 Frequency of exposure to selected herbicides, insecticides, fungicides, and fumigants stratified by the number of days per year of exposure
Models that included the time variable "days per year" and stratification for age and province of residence were also assessed for the individual herbicide compounds bromoxynil, 2,4-DB, diallate, MCPA, triallate, and treflan. No significant associations were found.
|
| Individual compounds |
Days/yr |
NHL
|
Controls
|
ORa (95% CI) |
| n |
% |
n |
% |
|
| Herbicides |
|
|
|
|
|
|
| 2,4-D |
Unexposed |
406 |
78.5 |
1213 |
80.5 |
1 |
|
>0 and  2 |
55 |
10.6 |
160 |
10.6 |
1.17 (0.83–1.64) |
|
>2 and 5 |
36 |
7.0 |
82 |
5.4 |
1.39 (0.91–2.13) |
|
>5 and 7 |
9 |
1.7 |
20 |
1.3 |
1.38 (0.60–3.15) |
|
>7 |
11 |
2.1 |
31 |
2.1 |
1.22 (0.60–2.49) |
| Mecoprop Unexposed |
464 |
89.8 |
1425 |
94.6 |
1 |
|
|
>0 and 2 |
31 |
6.0 |
48 |
3.2 |
2.27 (1.40–3.68) |
|
 2 |
22 |
4.3 |
33 |
2.2 |
2.06 (1.17–3.61) |
| Phosphonic acid: glyphosate |
Unexposed |
466 |
90.1 |
1373 |
91.2 |
1 |
|
>0 and 2 |
28 |
5.4 |
97 |
6.4 |
1.00 (0.63–1.57) |
|
>2 |
23 |
4.5 |
36 |
2.4 |
2.12 (1.20–3.73) |
| Dicamba |
Unexposed |
491 |
95.0 |
1456 |
96.7 |
1 |
|
1 |
26 |
5.0 |
50 |
3.3 |
1.58 (0.96–2.62) |
| Insecticides |
|
|
|
|
|
|
| Malathion |
Unexposed |
445 |
87.0 |
1379 |
91.6 |
1.00 |
|
>0 and 2 |
50 |
9.7 |
88 |
5.8 |
1.82 (1.25–2.68) |
|
2 |
22 |
4.3 |
39 |
2.6 |
1.75 (1.02–3.03) |
| DDT |
Unexposed |
485 |
93.8 |
1447 |
96.1 |
1.00 |
|
>0 and 2 |
18 |
3.5 |
32 |
2.1 |
1.75 (0.96–3.21) |
|
>2 |
14 |
2.7 |
27 |
1.8 |
1.50 (0.77–2.91) |
| Fungicides |
|
|
|
|
|
|
| Captan |
Unexposed |
497 |
96.1 |
1482 |
98.4 |
1.00 |
|
>0 and 2 |
11 |
2.1 |
12 |
0.8 |
2.69 (1.17–6.19) |
|
>2 |
9 |
1.7 |
12 |
0.8 |
2.80 (1.13–6.90) |
| Sulphur |
Unexposed |
500 |
96.7 |
1485 |
98.6 |
1.00 |
|
Exposed 1 |
17 |
3.3 |
21 |
1.4 |
2.26 (1.16–4.40) |
| Fumigant |
|
|
|
|
|
|
| Carbon tetrachloride |
Unexposed |
504 |
97.5 |
1488 |
98.8 |
1.00 |
|
>0 and 2 |
13 |
2.5 |
18 |
1.2 |
2.13 (1.02–4.47) |
|
a ORs calculated with strata for the variables age and province of residence.