Table 2

Clinical characteristics of sample population

VariablesClinical parametersCOPD-X/GOLDGLI-2012
n=238n=238
SexMale127 (53%)123 (52%)
AgeYears (mean (95% CI))54.67 (53.13 to 56.2)52.69 (51.15 to 54.23)
Corpulence data and statusBMI (median (IQR))22.86 (19.38–27.89)22.91 (19.04–27.89)
Underweight (BMI <18.5 kg/m2)48 (20%)51 (22%)
Normal weight (BMI 18.5–24.9 kg/m2)99 (42%)95 (40%)
Overweight (BMI 25–29.9 kg/m2)50 (21%)49 (21%)
Obese (BMI ≥30 kg/m2)40 (17%)42 (18%)
Smoking statusNever smoker20 (8%)17 (7%)
Former smoker95 (40%)98 (41%)
Current smoker123 (52%)123 (52%)
Smoking pack years (median (IQR))21.5 (7–40)20 (6.13–40)
MortalityDeceased (all cause)38 (16%)35 (15%)
Deceased age (years) (mean (95% CI))57.79 (53.97 to 61.61)57.15 (53.08 to 61.22)
COPDClinical history of COPD161 (70%)156 (68%)
  • Fifteen patients were identified via FEV1/FVC <0.7 who were not identified via FEV1/FVC <LLN, and vice versa 15 patients were identified via FEV1/FVC >LLN and not by FEV1/FVC <0.7.

  • BMI, body mass index; COPD, chronic obstructive pulmonary disease; FEV1, forced expiratory volume in 1 s; FVC, forced vital capacity; GLI, global lung function imitative; GOLD, global initiative for chronic obstructive lung disease; LLN, lower-limit of normal.