Table 3 Insecticides: frequency of exposure to insecticides classified into major chemical classes and as individual compounds
| Major chemical classes |
NHL n = 517
|
Controls n = 1506
|
ORa (95% CI) |
ORadjb (95% CI) |
| n exposed |
% exposed |
n exposed |
% exposed |
|
| Carbamates,c exposed |
37 |
7.2 |
60 |
4.0 |
1.95 (1.25–3.05) |
1.92 (1.22–3.04) |
| Individual carbamate insecticides |
|
|
|
|
|
|
| Carbaryl |
25 |
4.8 |
34 |
2.3 |
2.05 (1.18–3.55) |
2.11 (1.21–3.69) |
| Carbofuran |
9 |
1.7 |
18 |
1.2 |
1.58 (0.68–3.67) |
1.64 (0.70–3.85) |
| Methomyl |
6 |
1.2 |
13 |
0.9 |
1.86 (0.67–5.17) |
1.65 (0.54–5.03) |
|
|
|
|
|
|
|
| Organochlorine, (1)d exposed |
50 |
9.7 |
134 |
8.9 |
1.16 (0.81–1.66) |
1.27 (0.87–1.84) |
| Individual organochlorine (1) insecticides |
|
|
|
|
|
|
| Chlordane |
36 |
7.0 |
105 |
7.0 |
1.06 (0.71–1.59) |
1.11 (0.74–1.69) |
| Lindane |
15 |
2.9 |
23 |
1.5 |
2.05 (1.01–4.16) |
2.06 (1.01–4.22) |
| Aldrin |
10 |
1.9 |
6 |
0.4 |
3.81 (1.34–10.79) |
4.19 (1.48–11.96) |
|
|
|
|
|
|
|
| Organochlorine (2) diphenylchloridese exposed |
86 |
16.6 |
233 |
15.5 |
1.24 (0.94–1.65) |
1.21 (0.90–1.62) |
| Individual organochlorine (2) diphenylchlorides |
|
|
|
|
|
|
| Methoxychlor |
65 |
12.6 |
201 |
13.3 |
1.08 (0.79–1.47) |
1.02 (0.74–1.41) |
| DDT |
32 |
6.2 |
59 |
3.9 |
1.63 (1.03–2.57) |
1.73 (1.08–2.76) |
|
|
|
|
|
|
|
| Organophosphorus,f exposed |
90 |
17.4 |
167 |
11.1 |
1.69 (1.26–2.27) |
1.73 (1.27–2.36) |
| Individual organophosphorus insecticides |
|
|
|
|
|
|
| Malathion |
72 |
13.9 |
127 |
8.4 |
1.77 (1.28–2.46) |
1.83 (1.31–2.55) |
| Dimethoate |
22 |
4.3 |
50 |
3.3 |
1.20 (0.71–2.03) |
1.20 (0.70–2.06) |
| Diazinon |
18 |
3.5 |
28 |
1.9 |
1.72 (0.92–3.19) |
1.69 (0.88–3.24) |
|
a ORs calculated with strata for the variables of age and province of residence.
b ORs adjusted for statistically significant medical variables (history of measles, mumps, cancer, allergy desensitization shots and a positive family history of cancer in a first-degree relative), and with strata for the variables of age and province of residence.
c Carbamate insecticides include carbaryl, carbofuran, and methomyl.
d Organochlorine insecticides class one includes aldrin; chlordane; dieldrin; endrin; heptachlor; lindane; and a mixture of lindane, carbathiin, and thiram (Vitavex).
e Organochlorine (2) diphenylchloride insecticides include DDT and methoxychlor.
f Organophosphorus insecticides include malathion, chlorpyrifos, diazinon, dimethoate, parathion, methidathion, and trichlorfon.