Variability and performance of NHS England's 'reason to reside' criteria in predicting hospital discharge in acute hospitals in England: a retrospective, observational cohort study.

Reported R2R metrics are highly variable between and within acute Trusts in England. Although case-mix or community care provision may account for some variability, the absence of a SDM prevents standardised reporting. Following the development of a SDM in one acute Trust, the variability reduced. However, the performance of eR2R was poor, prone to change even when negative and unable to meaningfully contribute to discharge planning.