This data collection reports on the number and proportion of patients aged 75 and over admitted as an emergency for more than 72 hours in England who have been identified as potentially having dementia, who are appropriately assessed and, where appropriate, referred on to specialist services. For 2015-16 the last part was replaced with have a care plan on discharge which meets agreed standards, but for 2016-17 the collection reverted to the previous definition. For the first three years the collection was part of CQUIN, but since 2016-17 it has become part of the requirements of the standard contract. From 2018-19 it has been collected on the SDCS system run by NHSD, instead of via Unify.