Abstract：
BACKGROUND: Functional impairment in schizophrenia is one of the main features of the disorder and implies a great impact on the patient\'s quality of life. The Brief Functioning Assessment Scale (FAST), originally validated in bipolar disorder, has also been validated for its application in other mental disorders. However, we only found one study on the reliability and validity of the Brazilian version in schizophrenia. The purpose of this study was to analyze the psychometric properties of the Spanish version of the FAST in patients diagnosed with schizophrenia.
METHODS: A total of 226 patients with a diagnosis of schizophrenia were evaluated by mean the FAST, the GAF and the self-care requirements scale (ERA). Scale properties were analyzed in terms of internal consistency, inter-observer agreement and test-retest reliability. Convergent validity with the GAF and ERA scales was also analyzed, as well as construct validity by means of a Confirmatory Factor Analysis (CFA).
RESULTS: For the total scale, the results showed high internal consistency (Cronbach\'s Alpha of, 87), as well as good inter-observer (ICC=,86) and test-retest (ICC=,77) agreement. Concurrent validity with the GAF scale was discrete (r=-,32; P<,001) and with the ERA scale was moderate (r=,50; P<,001). CFA showed an internal structure that matched the six factors proposed by the original scale, with a good level of item saturation for each factor.
CONCLUSIONS: The FAST scale showed good psychometric properties in terms of reliability and validity in its Spanish version for its application in patients with schizophrenia. It can be considered as a good tool to assess different areas of functional impairment in clinical practice and research.
METHODS: A total of 226 patients with a diagnosis of schizophrenia were evaluated by mean the FAST, the GAF and the self-care requirements scale (ERA). Scale properties were analyzed in terms of internal consistency, inter-observer agreement and test-retest reliability. Convergent validity with the GAF and ERA scales was also analyzed, as well as construct validity by means of a Confirmatory Factor Analysis (CFA).
RESULTS: For the total scale, the results showed high internal consistency (Cronbach\'s Alpha of, 87), as well as good inter-observer (ICC=,86) and test-retest (ICC=,77) agreement. Concurrent validity with the GAF scale was discrete (r=-,32; P<,001) and with the ERA scale was moderate (r=,50; P<,001). CFA showed an internal structure that matched the six factors proposed by the original scale, with a good level of item saturation for each factor.
CONCLUSIONS: The FAST scale showed good psychometric properties in terms of reliability and validity in its Spanish version for its application in patients with schizophrenia. It can be considered as a good tool to assess different areas of functional impairment in clinical practice and research.
摘要：
背景：精神分裂症的功能损害是该疾病的主要特征之一，对患者的生活质量有很大影响。简要功能评估量表(FAST)，最初在双相情感障碍中得到验证，在其他精神障碍中的应用也得到了验证。然而,我们仅发现一项关于巴西版精神分裂症患者信度和效度的研究.这项研究的目的是分析被诊断为精神分裂症的患者的西班牙语版FAST的心理测量学特性。
方法：对226例诊断为精神分裂症的患者进行FAST平均评估，GAF和自我保健要求量表(ERA)。从内部一致性的角度分析了尺度特性，观察者间的一致性和重测可靠性。还分析了GAF和ERA量表的收敛效度，以及通过验证性因子分析(CFA)构建效度。
结果：对于总规模，结果显示出高度的内部一致性(Cronbach'sAlpha，87),以及良好的观察者(ICC=，86)和重测(ICC=，77）协议。GAF量表的并发效度是离散的(r=-，32；P<，001），与ERA量表中等（r=，50；P<，001).CFA的内部结构与原始量表提出的六个因素相匹配，每个因素的项目饱和度都很高。
结论：在西班牙语版本中，FAST量表在精神分裂症患者中的应用在信度和效度方面表现出良好的心理测量特性。它可以被认为是在临床实践和研究中评估功能损害的不同领域的良好工具。
方法：对226例诊断为精神分裂症的患者进行FAST平均评估，GAF和自我保健要求量表(ERA)。从内部一致性的角度分析了尺度特性，观察者间的一致性和重测可靠性。还分析了GAF和ERA量表的收敛效度，以及通过验证性因子分析(CFA)构建效度。
结果：对于总规模，结果显示出高度的内部一致性(Cronbach'sAlpha，87),以及良好的观察者(ICC=，86)和重测(ICC=，77）协议。GAF量表的并发效度是离散的(r=-，32；P<，001），与ERA量表中等（r=，50；P<，001).CFA的内部结构与原始量表提出的六个因素相匹配，每个因素的项目饱和度都很高。
结论：在西班牙语版本中，FAST量表在精神分裂症患者中的应用在信度和效度方面表现出良好的心理测量特性。它可以被认为是在临床实践和研究中评估功能损害的不同领域的良好工具。
