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Table 5 Associations between reported lifetime occupational exposure to dust, gases or fumes and lung function (N = 497)

From: Occupation, smoking, and chronic obstructive respiratory disorders: a cross sectional study in an industrial area of Catalonia, Spain

  Ever exposed Exposure duration <15 years Exposure duration ≥ 15 years
Exposure to dust, fumes or gases (n) 268 (54%) 136 (27%) 132 (27%)
FEV1 (mL)‡ -33 (-117 to 51) +3 (-95 to 100) -80 (-186 to 26)
FEV1 to FVC ratio (%)‡ -1.1 (-2.3 to 0.1) -0.6 (-2.1 to 0.8) -1.7 (-3.3 to -0.2)
MMEF (mL/s)‡ -57 (-237 to 124) +13 (-192 to 218) -163 (-397 to 71)
  1. ‡ Linear regression coefficients (95% confidence intervals) denote mean differences in lung function parameters between exposed and never exposed individuals (n = 229); adjusted for sex, age, height and smoking status