Table 3

Predictors of FEV₁ and KCO decline by GEES analysis

Predictor	Change in FEV₁ (ml/year)		Change in KCO (mmol/min/kPa/l/year)
Predictor	Mean	95% CI	Mean	95% CI
Increase in baseline FEV₁ of 1 litre	−15	−7 to −23	0.976	0.946 to 1.006
Female vs male gender	−94	−173 to 16	0.016	−0.02 to 0.044
Increase by 1 year in baseline age	−0.6	−1 to 2	0.00009	−0.0007 to 0.001
Increase in total cigarette smoke exposure of 1 pack-year	−0.3	−1 to 0.3	−0.0003	−0.0007 to 0.0002
High occupational risk vs zero occupational risk	−45	−152 to 61	−0.043	−0.001 to −0.085
Low occupational risk vs zero occupational risk	−44	−154 to 65	−0.039	−0.011 to 0.090
Increase of 1 μg/m³ in PM₁₀ exposure	−3	−0.2 to −6	−0.002	−0.005 to 5×10−⁵
Increase of 1 μg/m³ in SO₂ exposure	−3	−7 to 1	−0.002	−0.005 to 0.001
Increase of 1 μg/m³ in NO₂ exposure	−4	−2 to 1	−0.002	−0.001 to 0.001
Increase of 1 mg/m³.h in ozone exposure	0.001	−0.017 to 0.003	−0.008	−0.015 to −0.001