The list includes only those reported by 1% or more of responders. Major chemical classes NHL n = 517 Controls n = 1506 ORa (95% CI) ORadjb (95% CI) n exposed % exposed n exposed % exposed Phenoxyherbicides,c exposed 131 25.3 319 21.2 1.46 (1.09–1.82) 1.38 (1.06–1.81) Individual phenoxyherbicides  2,4-D 111 21.5 293 19.5 1.26 (0.97–1.64) 1.32 (1.01–1.73)  Mecoprop 53 10.2 81 5.4 2.23 (1.38–3.07) 2.33 (1.58–3.44)  MCPA 17 3.3 46 3.1 1.08 (0.59–1.94) 1.10 (0.60–2.00)  Diclofopmethyl 9 1.7 25 1.7 0.96 (0.42–2.20) 0.95 (0.41–2.22) Phosphonic acid,d exposed 63 12.2 147 9.8 1.42 (0.95–1.90) 1.40 (0.94–1.89) Individual phosphonic herbicides  Glyphosate (Round-up) 51 9.9 133 8.8 1.26 (0.87–1.80) 1.20 (0.83–1.74) Thiocarbamates,e exposed 21 4.1 49 3.3 1.41 (0.62–2.20) 1.46 (0.82–2.58) Individual thiocarbamate herbicides  Diallate (n exposed) 11 2.1 29 1.9 1.26 (0.59–2.67) 1.46 (0.68–3.14) Phenols: Bromoxynil,f exposed 16 3.1 48 3.2 1.05 (0.41 1.69) 1.07 (0.58–1.99) Dicamba,g exposed 73 14.1 131 8.7 1.92 (1.39–2.66) 1.88 (1.32–2.68) Individual dicamba herbicides  Dicamba (Banvel or Target) 26 5.0 50 3.3 1.59 (0.95–2.63) 1.68 (1.00–2.81) Dinitroaniline,h exposed 11 2.1 31 2.1 1.17 (0.56–2.41) 1.20 (0.61–2.35) Individual dinitroaniline herbicides  Trifluralin 11 2.1 31 2.1 1.17 (0.56–2.41) 1.06 (0.50–2.22)

^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 Phenoxyherbicides include the phenoxyacetic acids (e.g., 2,4-D and MCPA), the phenoxy-2-propionic acids (e.g., mecoprop); the phenoxybutanoic acids (e.g., 2,4-DB) and other phenoxyalkanoic acids (e.g., diclofopmethyl).

^d Glyphosate is the only phosphonic acid herbicide reported by more than 1% of responders. Round-up, Touchdown, Victor, Wrangler, Laredo do not include dicamba, and Rustler is a mixture of dicamba and glyphosate.

^e Thiocarbamate herbicides include diallate and triallate.

^f Bromoxynil is the only phenol herbicide included.

^g Dicamba as a major chemical class includes Banvel, and Target, and a mixture of dicamba and glyphosate (Rustler), or mixtures of dicamba, 2,4-D, and mecoprop (Dynel DS, Killex).

^h Dinitroaniline herbicides include ethalfluralin and trifluralin.

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