Analysis of OPCRIT results indicate the presence of a novel 鈥榮ocial functioning鈥?domain and complex structure of other dimensions in the Wielkopolska (Poland) population

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• 作者：Malgorzata Maciukiewicz^a ; Piotr M. Czerski^b ; Anna Leszczynska-Rodziewicz^b ; Pawel Kapelski^b ; Aleksandra Szczepankiewicz^b ; Monika Dmitrzak-Weglarz^b ; Maria Skibinska^b ; Joanna Pawlak^b ; Joanna Hauser^b ; Wojciech M. Karlowski^a ; ^{wmk@amu.edu.pl}
• 关键词：SCH ; schizophrenia ; BD ; bipolar affective disorder ; PCA ; principal component analysis ; FA ; factor analysis ; EFA ; exploratory factor analysis ; ML ; Maximum Likelihood Factor Analysis
• 刊名：Schizophrenia Research
• 出版年：2012
• 期刊代码：240_09209964
• 类别：med
• 出版时间：July, 2012
• 卷：138
• 期：2-3
• 页码：223-232
• 文件大小：2803 K

摘要

Objective

The main goal of our study was to examine factor structure of schizophrenia and bipolar affective disorder in the Wielkopolska population, using dimension reduction techniques.

Methods

Schizophrenia (n = 443) and bipolar affective disorder (n = 499) patients were assessed using Operational Criteria Checklist (OPCRIT). Principal component analysis and Maximum Likelihood Factor analysis were carried out to obtain factor structure with significance level for the factor loadings exceeding 0.4. Varimax and promax rotations were used to identify the meaningful factors.

Results

Rotated solution indicated multidimensional structure for depression and excitement as well as positive domains in the schizophrenia sample. Negative and disorganized dimensions existed as single factors, with item composition similar to that already described. Additionally, a new 鈥渟ocial functioning鈥?dimension was identified. In bipolar affective disorder sample, the interpretable dimensions included: depression, psychotic, atypical depression, negative, substance use, excitement and 鈥渟ocial functioning鈥? Factor structure of the combined sample consisted of depression, excitement, disorganization, delusions, substance use, negative and social functioning factors.

Conclusions

Our results indicated multidimensional and hierarchical structures for some of the previously described dimensions. Additional use of items not exactly related to disease symptoms lead to discovery of 鈥渟ubstance use鈥?and 鈥渟ocial functioning鈥?dimensions.