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 compoundsDays/yrNHLControlsORa (95% CI)
n%n%
Herbicides
 2,4-DUnexposed40678.5121380.51
>0 and ≤25510.616010.61.17 (0.83–1.64)
>2 and ≤5367.0825.41.39 (0.91–2.13)
>5 and ≤791.7201.31.38 (0.60–3.15)
>7112.1312.11.22 (0.60–2.49)
 Mecoprop Unexposed46489.8142594.61
>0 and ≤2316.0483.2 2.27 (1.40–3.68)
≥2224.3332.2 2.06 (1.17–3.61)
 Phosphonic acid: glyphosateUnexposed46690.1137391.21
>0 and ≤2285.4976.41.00 (0.63–1.57)
>2234.5362.4 2.12 (1.20–3.73)
 DicambaUnexposed49195.0145696.71
≥1265.0503.31.58 (0.96–2.62)
Insecticides
 MalathionUnexposed44587.0137991.61.00
>0 and ≤2509.7885.8 1.82 (1.25–2.68)
≥2224.3392.6 1.75 (1.02–3.03)
 DDTUnexposed48593.8144796.11.00
>0 and ≤2183.5322.11.75 (0.96–3.21)
>2142.7271.81.50 (0.77–2.91)
Fungicides
 CaptanUnexposed49796.1148298.41.00
>0 and ≤2112.1120.8 2.69 (1.17–6.19)
>291.7120.8 2.80 (1.13–6.90)
 SulphurUnexposed50096.7148598.61.00
Exposed ≥1173.3211.4 2.26 (1.16–4.40)
Fumigant
 Carbon tetrachlorideUnexposed50497.5148898.81.00
>0 and ≤2132.5181.2 2.13 (1.02–4.47)
  • a ORs calculated with strata for the variables age and province of residence.