Does pain increase delirium risk in people with dementia during a hospital admission?

In the United Kingdom around 3.2 million hospital bed days a year are occupied by people with dementia¹, who are also six times more likely to be admitted with a delirium which often goes undetected². Delirium is distressing for the person with dementia and their family1, and independently predicts worse outcomes such as higher mortality, increased length of stay, and increased institutionalisation³.