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Informant Questionnaire on Cognitive Decline in the Elderly (IQ-CODE)

The IQ-CODE is a widely used screening tool of dementia. Research revealed that it has high reliability, sensitivity, and specificity, and it is very useful in differentiating elderly suffering from dementia from those experiencing normal aging.

Now we want you to remember what your friend or relative was like 10 years ago and to compare it with what he/she is like now. Below are situations where this person has to use his/her memory or intelligence and we want you to indicate whether this has improved, stayed the same or got worse in that situation over the past 10 years.

Compared with 10 years ago，how is this person at:
Please indicate the changes you have observed by checking the appropriate answer.
0Not sure 1Much improved 2A bit improved 3Not much change 4A bit worse 5Much worse
***Cannot choose “not sure” for more than 3 times***
1. Recognizing the faces of family and friends
0 1 2 3 4 5
2. Remembering the names of family and friends
0 1 2 3 4 5
3. Remembering things about family and friends e.g. occupations, birthdays, addresses
0 1 2 3 4 5
4. Remembering things that have happened recently
0 1 2 3 4 5
5. Recalling conversations a few days later
0 1 2 3 4 5
6. Forgetting what he/she wanted to say in the middle of a conversation
0 1 2 3 4 5
7. Remembering his/her address and telephone number
0 1 2 3 4 5
8. Remembering what day and month it is
0 1 2 3 4 5
9. Remembering where things are usually kept
0 1 2 3 4 5
10. Remembering where to find things which have been put in a different place from usual
0 1 2 3 4 5
11. Adjusting to any change in his/her day-to-day routine
0 1 2 3 4 5
12. Knowing how to work familiar machines around the house
0 1 2 3 4 5
13. Learning to use a new gadget or machine around the house
0 1 2 3 4 5
14. Learning new things in general
0 1 2 3 4 5
15. Remembering things that happened to him/her when he/she was young
0 1 2 3 4 5
16. Remembering things he/she learned when he/she was young
0 1 2 3 4 5
17. Understanding the meaning of unusual words
0 1 2 3 4 5
18. Understanding magazine or newspaper articles
0 1 2 3 4 5
19. Following a story in a book or on TV
0 1 2 3 4 5
20. Composing a letter to friends or for business purposes
0 1 2 3 4 5
21. Knowing about important historical events of the past
0 1 2 3 4 5
22. Making decisions on everyday matters
0 1 2 3 4 5
23. Handling money for shopping
0 1 2 3 4 5
24. Handling financial matters
e.g. the pension, dealing with the bank
0 1 2 3 4 5
25. Handling other everyday arithmetic problems
e.g. knowing how much food to buy, knowing how long between visits from family or friends
0 1 2 3 4 5
26. Using his/her intelligence to understand what's going on and to reason things through
0 1 2 3 4 5
Reset Submit
Disclaimer: The IQ-CODE could only be used for screening purpose only and it's not a tool for formal clinical diagnosis of dementia. If you have any inquiries on the results, please arrange with our memory clinic or specialized physicians for detailed consultation and diagnosis.

Use with permission from Dr. A.F. Jorm & J.L. Fuh.

Reference
  1. Fuh J. L., Teng E. L., Lin K. N., Larson E. B., Wang S. J., Liu C. Y., et al. (1995). The Informant Questionnaire on Cognitive Decline in the Elderly (IQ-CODE) as a screening tool for dementia for a predominantly illiterate Chinese population. Neurology, 45, 92-96.
  2. Jorm, A. F. (1994). A short form of the Informant Questionnaire on Cognitive Decline in the Elderly (IQ-CODE): Development and cross-validation. Psychological Medicine, 24, 145-153.
  3. Jorm, A. F., Broe, G.A., Creasey, H., et al. (1996). Further data on the validity of the Informant Questionnaire on Cognitive Decline in the Elderly (IQ-CODE). International Journal Geriatric Psychiatry, 11, 131-139.

Results

Rating:

Cannot choose “not sure” for more than 3 times
Return to IQ-CODE

Results

Rating:

According to the rating, your relative or friend had suffered from significant decline in level of cognitive functioning. Research indicated that the observed changes may be signs of dementia. Please arrange your relative or friend for further diagnosis.

JCCPA's recommendation

Early intervention can effectively delay cognitive decline and minimize pressure for family caregivers. Please refer to Memory Clinic for assessment arrangement or contact our social worker on 2636 6323.
Return to IQ-CODE

Results

Rating:

According to the rating, your relative or friend’s level of cognitive functioning ranged from slightly decline to stably maintain. Research indicated that the observed changes were within the range of normal aging. Chance for your relative or friend to develop dementia is relatively low.

JCCPA's recommendation

You / your relative are encouraged to check out "Brain Health Tips" and the social media platforms of JCCPA for more information about brain health. It is also recommended that you should complete this questionnaire every year for preliminary assessment on regular basis.
Return to IQ-CODE

Rating:

According to the rating, your relative or friend had no significant change in his/her level of cognitive functioning. Research indicated that the chance for your relative or friend to develop dementia is very low.

JCCPA's recommendation

You / your relative are encouraged to check out "Brain Health Tips" and the social media platforms of JCCPA for more information about brain health. It is also recommended that you should complete this questionnaire every year for preliminary assessment on regular basis.
Return to IQ-CODE

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Jockey Club Centre for Positive Ageing is a wholly owned subsidiary of The Chinese University of Hong Kong