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Motor Imagery Brain-Computer Interface in Rehabilitation of Upper Limb Motor Dysfunction After Stroke
Published on: September 1, 2023
IQCODE-Brief Version in Stroke Patients
Mine Sezgin1,2, Edis Hacılar1, Sevda Özel-Yıldız3
1Department of Neurology, İstanbul Faculty of Medicine, İstanbul University, İstanbul, Türkiye.
Brain and Behavior
|August 3, 2026
Summary
The Informant Questionnaire on Cognitive Decline in the Elderly (IQCODE) brief version effectively screens for post-stroke cognitive impairment. Both 16- and 13-item versions show good psychometric properties for telephone screening.
Area of Science:
- Neurology
- Psychometrics
- Gerontology
Background:
- Post-stroke cognitive impairment is a common complication affecting patient recovery and quality of life.
- Informant-based assessments offer a valuable perspective on cognitive changes following a stroke.
Purpose of the Study:
- To evaluate the psychometric properties, factorial structure, and screening efficacy of the IQCODE brief version in stroke survivors.
- To assess the reliability and construct validity of the IQCODE brief version using informant reports.
Main Methods:
- A cohort of 179 stroke patients (aged >18 years) was studied.
- Informants completed the IQCODE brief version via phone within one week of the patient's MoCA test.
- Psychometric analyses included Cronbach's alpha, test-retest reliability, EFA, and CFA.
Main Results:
- The 16-item IQCODE brief version showed excellent internal consistency (Cronbach's alpha = 0.94) and a four-factor structure.
- Confirmatory factor analysis supported a good model fit.
- ROC analysis for the 16-item version yielded an AUC of 0.771, with an optimal cut-off of 48.5. A 13-item version improved specificity to 76%.
Conclusions:
- Both 16- and 13-item IQCODE brief versions demonstrate promising psychometric properties for screening cognitive impairment in stroke patients.
- The tools are feasible for telephone administration, supporting clinical practice and remote screening.
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