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Table 5 Separate and joint effects for occupational dust exposure and atopy or smoking; odds ratios (OR) and 95% confidence interval (95% C.I.) – Chronic bronchitis, a separate and joint presence of mineral dust exposure and current smoking

From: Interaction of atopy and smoking on respiratory effects of occupational dust exposure: a general population-based study

   Smokers Non-smokers
   OR (95% C.I.) OR (95% C.I.)
Mineral dust: yes 3.97 (1.08;14.54)*† 1.57 (0.34;7.18)
  no 1.28 (0.39;4.27) 1.00 (---)
  1. * p < 0.05 compared to non-exposed non-smokers † p < 0.10 compared to non-exposed smokers Models included all three exposure types, with adjustment for living area, age, sex, pack years smoking, and working years