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The a) relative and b) absolute change in forced expiratory volume in 1 s (FEV1) and c) relative and d) absolute change in forced vital capacity (FVC) for ages 60–102 years. Adjusted for the categorical variables sex, smoking habits, heart failure, hypertension, diabetes, coronary heart disease, socioeconomic status and occupation and the continuous variables alcohol consumption and C-reactive protein. Age was modelled as a continuous variable using restricted cubic splines.
