정신증 환자의 증상과 기능에 대한 간략형 평가 척도의 타당도 및 신뢰도
The Validity and Reliability of Brief Rating Scales for the Assessment of Symptoms and Functions in Patients with Psychosis
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초록
본 연구에서 CGI-5 요인 척도와 PSP 척도의 타당도 및 신뢰도를 검증하였다. 이 도구들은 간결하고 신속한 평가가 가능하므로 임상 진료 및 장기 추적 관찰 연구에서 주요 정신증 환자의 정신 증상과 사회적 기능을 전반적으로 간략하게 평가하는 데 적합한 유용한 도구들이다.
Abstract
Objective：This study aimed to validate the Clinical Global Impression 5-factor (CGI-5 factor) scale and Personal and Social Performance scale (PSP), which are brief clinical global scales to assess the psychological symptoms and psychosocial functioning in patients with psychosis. Methods：The CGI-5 factor scale is composed of 5 items：CGI-Positive, Negative, Depressive, Excitement, and Cognitive. Concurrent validity and sensitivity to change were evaluated by comparing the CGI-5 factor scale with Positive and Negative syndrome Scale (PANSS) 5-dimension. Concurrent validity of PSP was compared with Global Assessment of Functioning (GAF) score and Psychosocial functioning (PSF) scales composed of selected items from Quality of Life Scale (QLS), Functional Analysis of Care Environments (FACE), and Social-Adaptive Functioning Evaluation (SAFE). A total of 63 inpatients were enrolled in this study. To evaluate inter-rater reliability, 20 patients were assessed by two investigators. Results：The correlations between the CGI-5 factor scale and PANSS were significant on admission (0.507<r<0.814). The changes in CGI-5 factor scale from admission to discharge correlated with the changes in PANSS (0.530<r<0.882). PSP significantly correlated with PSF and GAF (-0.804<r<-0.408). Inter-rater reliability for CGI-5 factor scale (0.67<ICC<0.72) and for PSP (ICC>0.86) were in moderate to substantial range. Conclusion：This study confirmed the validity and reliability of the CGI-5 factor scale and PSP. Given its simplicity and brevity, these can be used to evaluate global symptoms and psychosocial functioning of psychotic patients in routine clinical practice. (J Korean Neuropsychiatr Assoc 2007;46(5):492-498)
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