To the doctor:
This informant-based dementia screening tool from onmemory.ca is adapted from the Symptoms of Dementia Screener (SDS).
The SDS was developed as a screening tool for Alzheimer's disease to be used by lay people with little or no medical training. It is not intended to be filled out by persons in whom possible cognitive difficulties are suspected, but rather by someone else who knows them.
In its initial development and validation, it was found that using a cut-off of 5 or more "yes" responses to this screening instrument gave the test a specificity of 90.2% and a sensitivity of 84.6% for detecting possible or probable Alzheimer's disease.
Additionally, using this cut-off was found to have a positive predictive value of 85.9% (likelihood of having a diagnosis of Alzheimer's disease given a positive screen) and a negative predictive value of 84.6% (likelihood of not having an Alzheimer's disease diagnosis given a negative screen).
While the SDS represents a simple tool with high specificity and sensitivity, it should only be used as a guide, and cannot replace clinical diagnostic tools administered by trained professionals.
Responses to this test do not determine a diagnosis of dementia or Alzheimer's disease they may simply suggest the need for further assessment.
For more information about the SDS, visit Oxford Journals of Gerontology
Mundt JC, Freed DM, and JH Greist. Lay person-based screening for elderly detection of Alzheimer's disease: Development and validation of an instrument. Journal of Gerontology 2000;Vol 55B(3):163-170.
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Yes |
No |
Don't
Know |
1. Does the individual often repeat himself or herself or ask the same question over and over? |
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2. Does the individual seem more forgetful, that is, have trouble with short-term memory? |
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3. Does the individual need multiple reminders to do things they used to on their own, like chores, shopping or taking medication? |
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4. Does the individual repeatedly forget important appointments, family occasions or holidays? |
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5. Does the individual seem sad, down in the dumps or prone to crying more often than in the past, and without any apparent reason? |
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6. Does the individual have trouble doing routine calculations, managing finances or balancing a cheque book? |
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7. Does the individual appear to have lost interest in his or her usual activities such as hobbies, reading or social occasions? |
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8. Does the individual need help performing regular activities such as eating, dressing, bathing or using the bathroom? |
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9. Does the individual become easily and unexpectedly irritable, agitated, suspicious or has he or she started imagining (i.e. hearing, seeing or believing) things that are not real? |
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10. Has the individual been getting lost driving, driving unsafely, or stopped driving? Does he or she get lost walking in a familiar area, such as their own neighbourhood? |
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11. Does the individual have trouble finding words, finishing sentences or naming people or things? |
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Total |
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