Fig. 4From: Evaluation of exacerbations and blood eosinophils in UK and US COPD populationsStudy population by blood eosinophil count (2014 cohort). The closest eosinophil record within ± 180 days to the index date was used as the baseline value. CDM, Clinformatics™ Data Mart; CPRD, Clinical Practice Research DatalinkBack to article page