Fig. 5

Pre-index period hospitalizations, outpatient clinic visits, and outpatient pharmacy claims. Adjusted odds of (a) early and (b) late COPD-related rehospitalization. The early cohort consisted of all patients in whom COPD-related rehospitalization was evaluated 1–30 days post discharge and the late cohort consisted of the subset of patients not rehospitalized early in whom late COPD-related rehospitalization was evaluated (>30 days post discharge to 180 days post-index hospitalization). Each factor was adjusted for sex and age in a logistic regression model. Data are number of patients (%) or mean ± SD. CI, confidence interval