Table 2

 Farming exposures and risk of prostate cancer

Exposure measureCases, n = 405 (%)Controls, n = 392 (%)OR*95% CI
ref, reference.
*Adjusted for age, race and region.
Farming
    Non-farmers181 (44.7)205 (52.3)1Ref
    Ever farmed224 (55.3)187 (47.7)1.41.1 to 1.9
    Data missing00
Years of farming
    Non-farmers181 (45.8)205 (53.7)1Ref
    Farmers
        ⩽4100 (25.3)75 (19.6)1.51.1 to 2.2
        5–947 (11.9)40 (10.5)1.40.9 to 2.3
        10–2033 (8.4)26 (6.8)1.50.9 to 2.7
        21–6534 (8.6)36 (9.4)1.10.7 to 1.9
    p Value for trend0.51
    Data missing1010
Recency of last farming
    Non-farmers181 (48.8)205 (58.2)1Ref
    Farmers
        Before 195064 (17.3)34 (9.7)2.11.3 to 3.4
        1950–990 (24.3)73 (20.7)1.51.0 to 2.2
        1960–7921 (5.7)18 (5.1)1.30.7 to 2.6
        1980+15 (4.0)22 (6.3)0.80.4 to 1.6
    p Value for trend0.02
    Data missing3440
Mixed/applied pesticides
    Non-farmers181 (44.8)205 (52.4)1Ref
    Farmers
        Never mixed46 (11.4)56 (14.3)10.6 to 1.5
        Ever mixed177 (43.8)130 (33.3)1.61.2 to 2.2
    Data missing11
Handle hay, grain, silage
    Non-farmers181 (44.8)205 (52.3)1Ref
    Farmers
        Never handled22 (5.5)18 (4.6)1.40.7 to 2.7
        Ever handled201 (49.8)169 (43.1)1.41.1 to 1.9
    Data missing10
Harvest tobacco
    Non-farmers181 (44.8)205 (52.3)1Ref
    Farmers
    Never harvested136 (33.7)114 (29.1)1.41.0 to 2
    Ever harvested87 (21.5)73 (18.6)1.40.9 to 2
    Data missing10
Plant/pick crops, till soil
    Non-farmers181 (44.7)205 (52.3)1Ref
    Farmers
    Never planted10 (2.5)8 (2.0)1.40.5 to 3.6
    Ever planted214 (52.8)179 (45.7)1.41.1 to 1.9
    Data missing00
Pick cotton
    Non-farmers181 (44.7)205 (52.3)1Ref
    Farmers
        Never picked86 (21.2)45 (11.5)2.11.4 to 3.3
        Ever picked138 (34.1)142 (36.2)1.10.8 to 1.6
    Data missing00
Repair pesticide equipment
    Non-farmers181 (44.8)205 (52.3)1Ref
    Farmers
        Never repaired172 (42.6)141 (36.0)1.51.1 to 2
        Ever repaired51 (12.6)46 (11.7)1.30.8 to 2
    Data missing10
Feed animals, work with poultry/swine
    Non-farmers181 (44.8)205 (52.3)1Ref
    Farmers
        Never fed23 (5.7)17 (4.3)1.60.8 to 3.1
        Ever fed200 (49.5)170 (43.4)1.41.0 to 1.9
    Data missing10