Table 2—

Prevalence of the symptoms

SymptomNonfarmers not living on a farmNonfarmers living on a farmFarmersBeing a farmer#Only living on a farm
Subjects n21850198
ODTS1.84.06.64.3 (1.3–14)2.4 (0.4–14)
Chronic bronchitis1210110.9 (0.5–1.7)0.8 (0.3–2.3)
Current wheezing116.0101.2 (0.6–2.4)0.6 (0.2–2.3)
Doctor's diagnosis of asthma6.04.08.61.5 (0.7–3.1)0.6 (0.1–3.0)
Use of asthma medication4.207.61.9 (0.8–4.4) +
Chronic rhinitis3840370.9 (0.6–1.4)1.1 (0.6–2.0)
Chronic conjunctivitis4042310.8 (0.5–1.2)1.2 (0.6–2.2)
Pollen-induced UAS2422150.6 (0.4–1.0)0.96 (0.5–2.0)
Pet-induced UAS16225.10.3 (0.1–0.7)1.8 (0.8–3.9)
Farm work-induced UAS28
  • Data are presented as per cent or adjusted odds ratio (95% confidence interval), unless otherwise stated

  • ODTS: organic dust toxic syndrome

  • UAS: upper airway symptoms

  • #: comparing farmers with nonfarmers not living on a farm

  • : comparing nonfarmers living on a farm with nonfarmers not living on a farm

  • +: odds ratios could not be calculated since none of the nonfarmers living on a farm used asthma medication