Table 1

 Demographic and farming characteristics of conventional farmers and organic farmers

Conventional farmers(n = 1205)Organic farmers(n = 593)
QACs, quaternary ammonium compounds.
Male, n (%)658 (54.6)317 (53.5)
Mean (SD) age, years45.5 (9.7)44.2 (8.4)
Mean (SD) years of farm work21.8 (10.8)16.6 (9.9)
Education, n (%)
    Low or medium965 (80.8)325 (55.5)
    High (at least higher secondary education)229 (19.2)261 (44.5)
Smoking habits, n (%)
    Current228 (19.1)91 (15.4)
    Ever380 (31.8)210 (35.6)
Asthma in parents or siblings, n (%)193 (16.1)96 (16.3)
Hay fever in parents or siblings, n (%)204 (17.1)130 (22)
Childhood farming environment, n (%)
    No202 (16.8)226 (38.1)
    Crops only234 (19.4)80 (13.5)
    Livestock769 (63.8)287 (48.5)
Current farm type, n (%)
    Crops only428 (35.5)201 (33.9)
    Livestock and crops137 (11.4)121 (20.4)
    Livestock only640 (53.1)271 (45.7)
Farm childhood, adulthood livestock farming, n (%)
    No, No86 (7.1)98 (16.5)
    No, Yes116 (9.6)128 (21.6)
    Yes, No342 (28.4)103 (17.4)
    Yes, Yes661 (54.9)264 (44.6)
Livestock type, n (%)
    Dairy558 (46.3)254 (42.8)
    Pigs372 (30.9)43 (7.3)
    Sheep79 (6.6)90 (15.2)
    Poultry33 (2.7)47 (7.9)
    Beef or veal33 (2.7)43 (7.3)
    Goats8 (0.7)39 (6.6)
Crop type, n (%)
    Arable farming548 (45.5)167 (28.2)
    Horticulture120 (10)256 (43.2)
Disinfectant use, n (%)
    QACs183 (15.2)34 (5.7)
    Other disinfectants541 (44.9)197 (33.2)