Adapted with permission from Registered Nurses Association of Ontario, Nursing Best Practice Guideline: Screening for Delirium, Dementia and Depression in Older Adults, November, 2003
Deterioration Cognitive Observee (DECO)
The DECO questionnaire is to be completed by a person, such as a family member, who has had at least monthly contact with the client for the last 3 years.
A. Instruct the person who is completing the form to:
- Consider how their relative was a year ago. Explain that the questions they are answering relate to everyday situations – the decisions are based on what they know about the person who is suspected of having an illness that has affected how the person is thinking and behaving.
- Direct the person filling out the form to indicate their answers as either: Better or about the same (2), Not as well (1), Much worse (0).
B. Scoring the form:
- The total score may range from 0 (indicates considerable change) to 38 (indicates no change). A score of less than 30 indicates high likelihood of dementia and warrants further investigation and referral.