The Validity and Reliability of Brief Rating Scales for the Assessment of Symptoms and Functions in Patients with Psychosis / 신경정신의학

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 (0.5070.86) 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.

A Validation Study of the Korean-Version of the Personal and Social Performance Scale / 대한정신약물학회지

OBJECTIVE: Personal and social performance scale (PSP) has been reported as useful tool for the assessment of functioning in the psychiatric population. The authors wanted to assess the reliability and validity of the Korean version of the PSP (K-PSP). METHODS: One hundred ten patients, including out-patients and in-patients, diagnosed as schizophrenia and schizoaffective disorder according to the DSM-IV criteria were participated in the study. Subjects were assessed with K-PSP, Positive and negative syndrome scale (PANSS), Global assessment functioning scale (GAF),and Clinical global impression-severity (CGI-S) to evaluate cross-validation. Statistical analysis was done by the calculation of Cronbach's alpha, Pearson correlation coefficient. RESUTLS: The Cronbach's alpha coefficient of K-PSP was 0.79. The correlations of each domain of K-PSP with the total score of K-PSP were statistically significant (r= -0.46~-0.84, p<0.001). The inter-rater reliabilities of the total score of K-PSP was 0.79 (p<0.001) and individual score (r=0.775~0.783, p<0.001) relatively high. The total score of K-PSP showed a meaningful correlations with those of PANSS (r=-0.60, p<0.001), GAF (r=-0.71, p<0.001) and CGI-S (r=0.60, p<0.001). CONCLUSION: The K-PSP is the useful tool for assessment of functioning in the psychiatric population. So K-PSP can be widely used in the clinical practice and psychiatric studies.