Poor agreement between chart-based and objectively identified comorbidities of COPD

The prevalence and agreement of chart-based and objectively identified comorbidities. a) Cohen's κ for agreement and the prevalence of chart-based (red) and objectively identified comorbidities (blue). The right-hand column (green) shows the combination of both methodologies for each comorbidity, i.e. the presence of chart-based or objectively identified comorbidity within a single patient. b) Frequency of objectively identified disease in subjects known to have chart-based disease (red) and that of previously known chart-based disease in subjects who were objectively identified with this comorbidity (blue). Excluded from all analyses: 13 patients lacked acceptable quality carotid intima–media thickness measurement, 11 lacked an acceptable ECG and six did not fill out the Hospital Anxiety and Depression Scale questionnaire. n_C: number of patients with chart-based disease; n_O: number of patients with objectively identified disease. ^#: based on laboratory value; ^¶: based on technical assessment; ⁺: based on a questionnaire.