FIGURE 2. Association Between Fragmented Readmissions, Electronic Information Sharing, and Repeat Imaging, Stratified by AD Diagnosis, 2018 Medicare Beneficiaries^a.

AD, Alzheimer disease; HIE, health information exchange.

^aORs for repeat imaging during a 30-day readmission in fragmented readmissions compared with nonfragmented/same-hospital readmissions and in fragmented readmissions with different categories of information sharing (same HIE, different HIE, no HIE, missing HIE information) compared with nonfragmented readmissions, stratified by AD status. Models are adjusted for patient age, sex, race, Charlson Comorbidity Index score, diagnosis related group of the readmission, readmission hospital urban/rural status, size, ownership, type (general medical/surgical vs other), and teaching status. Readmission hospital fixed effects and robust SEs clustered at the hospital level were used.