Strengths and limitations of the study
This is the largest longitudinal study to report on the association between potentially inappropriate prescribing and post-discharge health outcomes in a cohort of geriatric rehabilitation inpatients using STOPP/START v2 criteria. The data were collected through a highly standardized comprehensive assessments performed by a trained multidisciplinary team, providing detailed information, which may strengthen the clinical robustness of our findings. However, it was a single-site study in a geriatric rehabilitation inpatient─ the interpretation and generalisability of the findings to other care settings or patients must be done with caution. The observational study design limits the ability to establish a causal relationship between inappropriate medication and clinical outcomes. In addition, whether patients discharged from geriatric rehabilitation were adhered to their medication or have made changes to their prescription following discharge from geriatric rehabilitation were unable to verify.