Characteristics of SAPALDIA follow-up participants at baseline (1991; upper part), follow-up (2002; middle part), and between the two examinations (lower part).

AAT: Alpha1-antitrypsin; BMI: Body mass index; ETS: regularly exposed to environmental tobacco smoke; FEF25-75%: mid expiratory flow; FEV1: forced expiratory volume in 1 second; FVC: forced vital capacity; hs-CRP: high-sensitivty C-reactive protein; IQR: Interquartile range; SD: Standard deviation.
aPearson's χ2 test for testing equal proportions, analysis of variance (ANOVA) for testing equal means of normally distributed data (AAT levels and spirometric measurements), and Kruskal-Wallis test for testing equal distributions in not normally distributed data (age and BMI values) between the three genotype classes.
bObese subjects were defined as having a BMI≥30kg/m2.