The Informant Questionnaire on Cognitive Decline in the Elderly (IQCODE): a review
By Anthony F Jorm. International Psychogeriatrics, 2004
780 citations recorded by the source corpus.
Background and aims: The IQCODE is widely used as a screening test for dementia, particularly where the subject is unable to undergo direct cognitive testing or for screening in populations with low levels of education and literacy. This review draws together research on the psychometric properties and validity of the IQCODE. Method: A systematic search of the literature was carried out using three databases. Results: The review shows that the questionnaire has high reliability and measures a single general factor of cognitive decline. It validly reflects past cognitive decline, performs at least as well at screening as conventional cognitive screening tests, predicts incident dementia, and correlates with a wide range of cognitive tests. A particular strength is that the IQCODE is relatively unaffected by education and pre-morbid ability or by proficiency in the culture's dominant language. The disadvantage of the IQCODE is that it is affected by informant characteristics such as depression and anxiety in the informant and the quality of the relationship between the informant and the subject. Conclusions: Because the IQCODE provides information complementary to brief cognitive tests, harnessing them together can improve screening accuracy.
Subfields: Clinical Psychology, Psychiatry and Mental health, Surgery
View Paper: https://www.semanticscholar.org/paper/7c72f2d1299e184bc22aa5fa7868ea9326e8695e
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
- Pratik Pandharipande
- Timothy D. Girard
- B. Pun
- James C. Jackson
- M. Pisani
- Jennifer L. Thompson
- Ayumi K. Shintani
- S. Kong
Citations in the corpus
- Long-Term Cognitive Impairment after Critical Illness (2013, background): “Cardiogenic shock, myocardial ischemia, or arrhythmia 141 (17) 79 (17)”
- Delirium as a Predictor of Long-Term Cognitive Impairment in Survivors of Critical Illness (2010, background): “97), sensitive (75%– 100%), and specific (68%– 86%) as a screening test for dementia (67).”
- Days of delirium are associated with 1-year mortality in an older intensive care unit population. (2009, background): “3; this cutpoint achieves a balance between sensitivity and specificity for detecting dementia (13, 24, 25).”