“…19 Each intervention may have affected both readmission rates (eg, by strengthening the patients’ ability to self-care, including managing pain or dressing wounds) and patient-reported health outcomes such as mobility or pain (eg, through exercise management). However, even though specific interventions have been evaluated individually, 20 it is still unclear whether, at a system level, reductions in readmission rates have coincided with improvements in broader patient outcomes. Assessing the association between these 2 is critical because of concerns that, by incentivizing hospitals to reduce readmission rates, there may have been unintended consequences for other aspects of care quality, 21 – 24 for example, if the penalties displaced follow-up activity from inpatient settings to other care settings (such as observation units) that are not included in the readmission metrics yet might have implications for patient care 4 ; or had disproportionate impacts on some hospitals groups.…”