Delirium was detected using the short form of the Confusion Assessment Method (CAM) both at admission and daily throughout the hospital stay. Cognitive status was determined using the Mini-Mental State Exam, Clinical Dementia Rating (CDR). Dementia was defined by a CDR score of 1. The primary independent variable was a composite of delirium and dementia diagnosis, and we examined the overlap by categorizing the cases into four groups: no delirium or dementia, dementia alone, delirium alone, and DSD.

Delirium was detected using the short form of the Confusion Assessment Method (CAM) both at admission and daily throughout the hospital stay. Cognitive status was determined using the Mini-Mental State Exam, Clinical Dementia Rating (CDR). Dementia was defined by a CDR score of 1. The primary independent variable was a composite of delirium and dementia diagnosis, and we examined the overlap by categorizing the cases into four groups: no delirium or dementia, dementia alone, delirium alone, and DSD.

Delirium was detected using the short form of the Confusion Assessment Method (CAM) both at admission and daily throughout the hospital stay. Cognitive status was determined using the Mini-Mental State Exam, Clinical Dementia Rating (CDR). Dementia was defined by a CDR score of 1. The primary independent variable was a composite of delirium and dementia diagnosis, and we examined the overlap by categorizing the cases into four groups: no delirium or dementia, dementia alone, delirium alone, and DSD.

Participants enrolled in the Delirium group according to the CAM.

1st year mortality according to the electronic national data base