Major chemical classes NHL n = 517 Controls n = 1506 ORa (95% CI) ORadjb (95% CI) n exposed % exposed n exposed % exposed Amide,c exposed 30 5.8 58 3.9 1.69 (1.05–2.73) 1.70 (1.04–2.78) Individual amide fungicides  Captan 20 3.9 24 1.6 2.48 (1.33–4.63) 2.51 (1.32–4.76)  Vitavax 10 1.9 39 2.6 0.88 (0.42–1.85) 0.88 (0.41–1.87) Aldehyde,d exposed 7 1.4 25 1.7 0.85 (0.35–2.07) 0.92 (0.37–2.29) Individual aldehyde fungicides  Formaldehyde 7 1.4 255 1.7 0.85 (0.35–2.07) 0.92 (0.37–2.29) Mercury Containing,e exposed 18 3.5 48 3.2 1.09 (0.61–1.95) 1.28 (0.70–2.27) Mercury-containing fungicides  Mercury dust (n exposed) 15 2.9 39 2.6 1.08 (0.57–2.04) 1.23 (0.64–2.35)  Mercury liquid (n exposed) 8 1.5 22 1.5 1.15 (0.49–2.69) 1.40 (0.74–3.22) Sulphur Compounds 17 3.3 21 1.4 2.26 (1.16–4.40) 2.80 (1.41–5.57)

^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 Amide fungicides include captan and a mixture of carbathiin, thiram, and lindane (Vitavax).

^d Aldehyde fungicides include formaldehyde and a mixture of formaldehyde and iprodione (Rovral Flo).

^e Mercury-containing fungicides include mercury dusts (Ceresan, Reytosan, and Agrox) and mercury liquids (Panogen, Leytosol, and PMAS).

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