Table 5

Concordance between the four methods of diagnosis (n = 324)

n(%)
Agreement between the four methods of COPD diagnosis60 (18.5)
Physician diagnosis of COPD, with one or more of the other three methods diagnosing non-COPD88 (27.2)
Physician diagnosis of non-COPD, with one or more of the other three methods diagnosing COPD64 (19.8)
Agreement between the four methods in the diagnosis of non-COPD26 (8.0)
Clinical diagnosis was COPD and FEV1/FVC postbronchodilator was >0.7084 (25.8)
  • COPD = chronic obstructive pulmonary disease. FEV1/FVC = forced expiratory volume in 1 second/forced vital capacity.