Table 3.: Prevalence of work-related respiratory symptoms among dairy farmers and office workers.

Respiratory Symptoms in the Last 12 Months Dairy Farmers (n = 52) Office Workers (n = 52) P-Value* OR (95% CI)
Any work-related respiratory symptoms 16 (30.8%) 7 (13.5%) 0.034 2.86 (0.97-8.68)
Cough 13 (25%) 5 (9.6%) 0.0381 3.13 (0.93-11.15)
Phlegm  8 (15.4%) 2 (3.8%) 0.045 4.4.55 (0.82-32.87)
Dyspnea 4 (7.7%)td> 1 (1.9%) 0.362 4.25 (0.42-103.53)
Wheezing 3 (5.8%) 2 (3.8%) 0.646 1.53 (0.20-13.79)
Chest tightness 3 (5.8%) 1 (1.9%) 0.617 3.3.12 (0.27-80.71)

Data are expressed as number and percentage of study subjects with certain variable.
OR: odds ratio; CI: confidence interval.
* Tested using multivariate logistic regression adjusted for age, BMI and ETS exposure.