We recently performed a retrospective study examining 97 patients (21 with an eosinophil count > 0.4 IU/L) enrolled in our COPD outreach program. Patients were stratified into three categories: readmission within 30 days (n = 23), readmission after 30 days (n = 21), and no readmission within 12 months (n = 53). The data were analyzed by using three different thresholds for blood eosinophil count: 0.2, 0.3, and 0.4 IU/L. We found no significant difference in mean eosinophil count among the three groups. Furthermore, there was no significant difference between patients requiring readmission vs those who did not regardless of the threshold of eosinophil count used in the analysis.