The short IQCODE as a predictor for delirium in hospitalized geriatric patients

Sif Blandfort, M. Gregersen, K. Rahbek, S. Juul, E. M. Damsgaard

Research output: Contribution to journalJournal articleResearchpeer-review


Background: Delirium is a serious complication, which occurs frequently in older patients with pre-existing cognitive impairment. There is a need for a simple tool to assess chronic cognitive impairment and the associated risk of delirium during hospitalization.
Aims: To assess the usefulness of the short IQCODE questionnaire in predicting delirium during hospitalization in older patients in a geriatric ward.
Methods: A prognostic study in the Geriatric Department at Aarhus University Hospital, Denmark. Consecutive patients were enrolled during March to December, 2017. After consent of the patient, the staff interviewed the relatives by phone using the short IQCODE questionnaire. Delirium was assessed morning and evening until discharge by the Confusion Assessment Method. The ability of short IQCODE to predict delirium was examined.
Results: Three hundred and fifty-three patients were eligible, and 306 completed the IQCODE. Delirium occurred among 19% of the patients during hospitalization. The IQCODE score was associated with the risk of delirium with a receiver operating characteristic (ROC) area of 0.72. A cut-point of 3.3 could separate the patients in a larger group with a risk of approximately 26% to develop delirium and a smaller group having a risk of approximately 6%.
Conclusion: The IQCODE is a useful tool to predict delirium among older inpatients, but it may not stand alone. It can be a useful supplement to other clinical information and observations in detecting patients needing dementia-friendly treatment and care.
Original languageEnglish
JournalAging Clinical and Experimental Research
Issue number10
Pages (from-to)1969-1976
Number of pages8
Publication statusPublished - 2020
Externally publishedYes


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