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Table 1 Patients’ demographic and clinical characteristics

From: Effect of urban air pollution on CRP and coagulation: a study on inpatients with acute exacerbation of chronic obstructive pulmonary disease

Variable Description
Age years
 <65 91 (28.71%)
 ≥ 65 226 (71.29%)
Sex
 Female 64 (20.19%)
 Male 253 (79.81%)
BMI (kg/m2)
 < 18.5 31 (9.78%)
 ≥ 18.5 286 (90.22%)
GOLD classes
 Moderate 31 (9.78%)
 Severe 196 (61.83%)
 Very severe 90 (28.39%)
Current smoker
 Yes 42 (13.25%)
 No 275 (86.75%)
Passive smoking
 Yes 107 (33.75%)
 No 210 (66.25%)
Use of statins
 Yes 58 (18.30%)
 No 259 (81.7%)
Inhaled corticosteroids
 Yes 272 (85.8%)
 No 45 (14.2%)
Comorbidities
 Hypertension 116 (36.59%)
 Coronary heart disease 79 (24.92%)
 Diabetes 46 (14.51%)
 Asthma 27 (8.51%)
 Bronchiectasis 7 (2.21%)
  1. BMI, Body mass index; GOLD, Global Initiative for Chronic Obstructive Lung Disease