Exposure | Detail |
---|---|
Occupation | All jobs that lasted >6 months prior to the index date or interview date if control (if <25 years at index date, then all jobs >3 months) |
Specific exposure to grain and silica dust | |
Specific occupation questions—farm worker, baker, brick/foundry worker, sand blaster, dental technician, mine/quarry worker | |
Hobbies | Any hobby regularly spent time doing prior to index date/interview and what exposures those hobbies led to |
Specific questions about gardening, chemical/fume exposure with hobby, fungus/mould exposure | |
Pets | Any pet ownership prior to index date |
Residence history | Place of residence for 2 years prior to diagnosis |
Specific questions about type of heating—gas, oil, electricity, wood burning, coal, other | |
Specific questions about construction occurring in the dwelling | |
Farm exposure | Four mutually exclusive categories of farm exposure—live on a farm, visit any farm, work on a farm or none. |
Farm any—indicates the individual lived, visited or worked on a farm | |
Crop exposure—general question about exposure followed by specific questions about wheat, barley, oats, hay, exposure quantified as daily, weekly, monthly or less often exposure of any type | |
Livestock exposure—general question about exposure followed by specific questions about cows, pigs, sheep, goats, chickens, exposure quantified as daily, weekly, monthly or less often | |
Allergy | Skin reactions to metals, soap, creams, other |
Allergic rhinitis | |
Asthma | |
Drug allergy | |
Insect allergy | |
Plant allergy | |
Food allergy | |
History of tuberculosis, hepatitis, blood transfusion | |
Smoking history—duration, quantity | |
Family history of allergies, vasculitis |