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Updated: Aug 3, 2025
Computerized Adaptive Testing System of Functional Assessment of Stroke
Published on: January 7, 2019
Test-Retest Reliability and Responsiveness of the Computerized Adaptive Test of Social Functioning in Persons With
Hsin-Yu Chiang1, Po-Ting Chen2, Shih-Chieh Lee3
1Department of Occupational Therapy, College of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan.
Objective:
To examine the test-retest reliability, minimal detectable change (MDC), responsiveness, and efficiency of the Computerized Adaptive Test of Social Functioning (Social-CAT) in patients with stroke.
Design:
Repeated-assessments design.
Setting:
A department of rehabilitation of a medical center.
Participants:
In total, 31 patients with chronic stroke and 65 patients with subacute stroke were recruited.
Intervention:
Not available.
Main Outcome Measure:
Social-CAT.
Results:
The Social-CAT showed acceptable test-retest reliability (intraclass correlation coefficient, 0.80) and small random measurement error (MDC%: 18.0%). However, heteroscedasticity was found (r between the means and the absolute change scores: 0.32), so the MDC% adjusted cut-off score is recommended for determining real improvement. Regarding responsiveness, the Social-CAT showed large differences (Kazis' effect size and standardized mean response: 1.15 and 1.09, respectively) in subacute patients. Regarding efficiency, the Social-CAT required an average of 5 items and less than 2 minutes for completion.
Conclusions:
Our findings indicate that the Social-CAT is a reliable and efficient measure with good test-retest reliability, small random measurement error, and good responsiveness. Thus, the Social-CAT is a useful outcome measure for routine monitoring of the changes in social function of patients with stroke.
