Table 1– Population characteristics at first examination
Subjects with COPDSubjects without COPDp-value
Subjects n12708734
Age years56.2±9.548.5±12.6<0.001
Marital status0.040
 With others67.269.8
Education years at school8.4±1.99.0±2.2<0.001
BMI kg·m−224.6±3.725.1±4.00.001
FEV1 L2.1±0.82.9±0.9<0.001
FEV1 % predicted67.0±18.290.9± 15.4<0.001
FEV1/FVC %63.0±6.983.4± 6.8<0.001
GOLD stage
Self-reported symptoms and comorbidities
 Cardiac comorbidities32.426.5<0.001
 Chest pain38.133.50.001
 Leg pain while walking11.910.10.046
 Current smoker79.154.8<0.001
Smoking years34.5±11.524.6±12.8<0.001
Self-reported baseline physical activity level<0.001
  • Data are presented as % or mean±sd, unless otherwise stated. The first examination may be different for each subject (Copenhagen City Heart Study examination 1, 2 or 3). COPD: chronic obstructive pulmonary disease; BMI: body mass index; FEV1: forced expiratory volume in 1 s; FVC: forced vital capacity; GOLD: Global Initiative for Chronic Obstructive Lung Disease.