Alford Ashleigh J, Casteleijn Daleen, Robertson Lesley J
Department of Psychiatry, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
Department of Occupational Therapy, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa.
S Afr J Psychiatr. 2025 May 15;31:2343. doi: 10.4102/sajpsychiatry.v31i0.2343. eCollection 2025.
The Brief Psychiatric Rating Scale - Expanded version (BPRS-E) is a 24-item clinician-administered scale whereby severity of psychopathology is rated using seven scoring categories for each item. Although useful in research and clinical settings, the construct validity has not been tested in South Africa.
Examine the construct validity of the BPRS-E using Rasch model analysis.
Community psychiatric clinics in the Sedibeng District of Gauteng province, South Africa.
A retrospective record review was conducted of adult psychiatric patients in whom the BPRS-E was used in routine clinical assessment by trained psychiatric nurses and doctors. Clinical records with completed BPRS-Es were purposively sampled from three community psychiatric clinics in the Sedibeng District. Data were entered into RUMM2030 software, and construct validity was analysed using the Rasch model, a probabilistic model that assesses item fit, response category functioning, and unidimensionality.
Clinical records of 192 patients (93 males and 99 females; aged between 18 and 79 years) were reviewed. Total BPRS-E scores ranged from 24 to 93, with a score of 39 or less in 52% of records ( = 100). Rasch analysis revealed good item fit and unidimensionality for the 24 BPRS-E items but disorganised threshold curves and inconsistent differential item functioning for the severity scoring categories.
This study supports the construct validity of the BPRS-E items when used clinically in a South African community psychiatric setting. However, severity scoring using the BPRS-E scoring categories in this setting requires further investigation.
This study provides evidence that the BPRS-E is valid in a community psychiatric setting in South Africa.
简明精神病评定量表扩展版（BPRS-E）是一个由临床医生施测的包含24个条目的量表，通过对每个条目使用七个评分类别来评定精神病理学的严重程度。尽管该量表在研究和临床环境中很有用，但尚未在南非检验其结构效度。
使用拉施模型分析检验BPRS-E的结构效度。
南非豪登省塞迪本地区的社区精神病诊所。
对成年精神病患者进行回顾性病历审查，这些患者的BPRS-E在常规临床评估中由经过培训的精神科护士和医生使用。从塞迪本地区的三个社区精神病诊所中有意抽取完成了BPRS-E的临床记录。数据录入RUMM2030软件，并使用拉施模型分析结构效度，拉施模型是一种概率模型，用于评估条目拟合度、反应类别功能和单维性。
审查了192名患者（93名男性和99名女性；年龄在18至79岁之间）的临床记录。BPRS-E总分范围为24至93分，52%的记录（=100）得分在39分及以下。拉施分析显示，24个BPRS-E条目具有良好的条目拟合度和单维性，但严重程度评分类别的阈值曲线混乱，条目功能差异不一致。
本研究支持BPRS-E条目在南非社区精神病环境中临床使用时的结构效度。然而，在这种环境中使用BPRS-E评分类别进行严重程度评分需要进一步研究。
本研究提供了证据，证明BPRS-E在南非社区精神病环境中是有效的。
