中国精神分裂症患者 8 项康复评定量表（RAS-8）的验证。
Validation of an 8-item Recovery Assessment Scale (RAS-8) for people with schizophrenia in China.
机构信息
Department of Sociology, School of Public Management, Central South University, Lushan South Road 932, Changsha, 410083, Hunan, China.
Department of Public Health, Faculty of Medicine, University of Queensland, 20 Weightman St, Herston, QLD, 4006, Australia.
出版信息
Health Qual Life Outcomes. 2021 Apr 13;19(1):119. doi: 10.1186/s12955-021-01763-3.
BACKGROUND
The 24-item Recovery Assessment Scale (RAS) is the most widely-used and well-validated tool for measuring recovery for people with mental illness. The current study aims to assess the reliability and validity of an 8-item short form of RAS (RAS-8) among a Chinese sample of people living with schizophrenia.
METHODS
A sample of 400 people living with schizophrenia were recruited for scale validation. Internal consistency was tested by calculating Cronbach's α. Test-retest reliability was calculated using the intraclass correlation coefficient (ICC) for the total score and weighted kappa for each item. Factor structure was tested with confirmatory factor analysis, and concurrent validity was examined by investigating the correlation of the RAS-8 with patient symptoms, disability, depression, anxiety, patient functioning, quality of life and general health.
RESULTS
The RAS-8 full scale and subscales showed good internal consistency with Cronbach's alpha ranging from 0.87 to 0.92. ICC of 0.99 and weighted kappa ranged from 0.62 to 0.88, which generally indicates good test-retest reliability. The findings supported an a priori two-factor structure, χ/df = 2.93, CFI = 0.98, TLI = 0.98, RMSEA = 0.07, SRMR = 0.035. Concurrent validity of the RAS-8 was further supported by its significant negative correlations with patient symptoms (r = -0.24, p < 0.01), disability (r = -0.30, p < 0.01), depression (r = -0.16, p < 0.05), and anxiety (r = -0.14, p < 0.05), and its significant positive relationships with patient functioning (r = 0.26, p < 0.01), quality of life (r = 0.39, p < 0.01) and general health (r = 0.34, p < 0.01).
CONCLUSIONS
This study confirmed the reliability and validity of an 8-item short-form RAS for people living with schizophrenia in Chinese communities. The validation of the RAS-8 allows for its use as an alternative for the full RAS as a rapid assessment tool in clinical and research settings. The findings are discussed for their implications for application and validation with other populations and in other countries.
背景
24 项康复评估量表（RAS）是目前用于评估精神疾病患者康复情况的最广泛使用和经过充分验证的工具。本研究旨在评估一种 8 项简短形式的 RAS（RAS-8）在中国精神分裂症患者样本中的信度和效度。
方法
招募了 400 名精神分裂症患者进行量表验证。采用克朗巴赫α系数评估内部一致性。采用总分的组内相关系数（ICC）和每个项目的加权kappa评估重测信度。采用验证性因子分析测试因子结构，并通过调查 RAS-8 与患者症状、残疾、抑郁、焦虑、患者功能、生活质量和一般健康的相关性来检验同时效度。
结果
RAS-8 全量表和分量表的克朗巴赫α系数在 0.87 到 0.92 之间，表明具有良好的内部一致性。ICC 为 0.99，加权 kappa 为 0.62 到 0.88，这通常表明具有良好的重测信度。研究结果支持先验的两因素结构，χ/df=2.93，CFI=0.98，TLI=0.98，RMSEA=0.07，SRMR=0.035。RAS-8 与患者症状（r=-0.24，p<0.01）、残疾（r=-0.30，p<0.01）、抑郁（r=-0.16，p<0.05）和焦虑（r=-0.14，p<0.05）呈显著负相关，与患者功能（r=0.26，p<0.01）、生活质量（r=0.39，p<0.01）和一般健康（r=0.34，p<0.01）呈显著正相关，这进一步支持了 RAS-8 的同时效度。
结论
本研究在中国社区精神分裂症患者中证实了 8 项简短 RAS 的信度和效度。RAS-8 的验证使其成为临床和研究环境中快速评估工具的 RAS 的替代工具。讨论了该结果对在其他人群和国家应用和验证的意义。
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