Self-report underestimates the frequency of the acute respiratory exacerbations of COPD but is associated with BAL neutrophilia and lymphocytosis: an observational study.

However, among those with any history of exacerbation, the difference in the frequency of moderate to very severe exacerbation between TEPS and those with COPD did not reach statistical significance (Self-report: 0.68 ± 0.87 exacerbations per year in TEPS versus 0.94 ± 1.25 in those with COPD [ P value from adjusted regression model = 0.391]; EHR-documented: 0.43 ± 0.27 exacerbations over three years in TEPS versus 0.64 ± 0.44 in those with COPD [ P value from adjusted regression model = 0.225]).

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