New subscales for an anchored version of the Brief Psychiatric Rating Scale: Construction, reliability, and validity in acute psychiatric admissions

被引:78
作者
Lachar, D
Bailley, SE
Rhoades, HM
Espadas, A
Aponte, M
Cowan, KA
Gummattira, P
Kopecky, CR
Wassef, A
机构
[1] Univ Texas, Hlth Sci Ctr, Dept Psychiat & Behav Sci, Sch Med, Houston, TX 77225 USA
[2] Univ Texas, Hlth Sci Ctr, Harris Cty Psychiat Ctr, Houston, TX 77225 USA
关键词
D O I
10.1037//1040-3590.13.3.384
中图分类号
B849 [应用心理学];
学科分类号
040203 ;
摘要
Attending psychiatrists completed an anchored version of the 18-item Brief Psychiatric Rating Scale (BPRS-A) based on admission and evaluation information on a total of 2,921 adult patients treated at I public sector acute psychiatric teaching hospital. Exploratory factor analysis was applied to a 6-month sample to construct 4 nonoverlapping subscales: Resistance, Positive Symptoms, Negative Symptoms, and Psychological Discomfort. Confirmatory factor analysis compared these new subscales to 3 other published subscale models using a second 6-month sample. Internal consistency, rater influence, and interrater agreement were estimated in separate studies. Discriminant validity was explored by comparison of diagnosis-based samples. Application of the BPRS-A as a debriefing instrument in the study of symptomatic change and the multiple challenges inherent in psychometric study of such a rating scale in realistic hospital practice are discussed.
引用
收藏
页码:384 / 395
页数:12
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