PRINCIPAL COMPONENT ANALYSIS OF THE SWEDISH VERSION OF THE POSITIVE AND NEGATIVE SYNDROME SCALE FOR SCHIZOPHRENIA

被引:46
作者
LINDSTROM, E [1 ]
VONKNORRING, L [1 ]
机构
[1] UNIV HOSP UPPSALA, DEPT PSYCHIAT, S-75185 UPPSALA, SWEDEN
关键词
PANSS; PRINCIPAL COMPONENT ANALYSIS; SCHIZOPHRENIA;
D O I
10.3109/08039489309103335
中图分类号
R749 [精神病学];
学科分类号
100205 ;
摘要
With permission from the late Dr. S. Kay, the Positive and Negative Syndrome Scale (PANSS) for schizophrenia has been translated into Swedish. In an earlier study, construct validity and inter-rater reliability have been demonstrated. In the present study, a principal component analysis was made on a series of 120 schizophrenic patients rated by means of the PANSS. As in earlier studies by Kay and Sevy and by Peuskens, a Negative, an Excited, a Positive, and a Depressive factor were found. These factors were very similar to those earlier described. However, the Depressive factor included important contributions from anxiety-related items and is best explained as an Anxious/Depressive factor. Furthermore, an important Cognitive factor was found. This factor has also been seen in the seven-factor results found by Kay and Sevy and by Peuskens but has been omitted in the final four-factor pyramidic model. From the results of the present study, however, it seems reasonable to modify and extend the pyramidic model with a five-factor model, including a Cognitive factor. With this five-factor model 70% of the variance is explained in the present principal component analysis. In the original pyramidic model suggested by Kay a relationship was hypothesized between the syndrome factors and the subgroups of schizophrenia. Such a relationship is not supported by the results of the present study.
引用
收藏
页码:257 / 263
页数:7
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