个体和社会功能量表中文版在精神分裂症患者中的信效度

摘要

目的:考察个体和社会功能量表(Personal and Social Performance scale,PSP)中文版(PSP-CHN)在精神分裂症患者中的信度和效度.方法:收集165例符合DSM-IV-TR精神分裂症诊断标准的门诊或住院精神分裂症患者,10例患者用于研究者一致性培训,155例进行大体社会功能量表(Global Assessment of Functioning Scale,GAF))、阳性和阴性症状量表(Positive and Negative Syndrome Scale,PANSS)和PSP-CHN检查,分析PSP-CHN量表的内部一致性、PSP-CHN与GAF的一致性(效标效度)以及与患者疾病严重度的相关性(关联效度).66例患者在首次PSP-CHN评估后的5～7天内,由另一名研究者对患者进行第2次检查,评价PSP-CHN的重测信度.27例PANSS总分≥60分的患者,接受系统药物治疗8周,评估8周后PANSS及PSP-CHN评分改变,以及二者的相关性.结果:PSP-CHN量表的内部一致性Cronbach α系数为0.84,PSP-CHN总分的研究者之间一致性Kappa值为0.56(ICC=0.94),重测一致性ICC＝0.95.PSP-CHN总分与GAF有较好的相关性(ICC＝0.95),与PANSS总分及分量表分负相关(r=-0.79,-0.57,-0.63和-0.71,P＜0.01).治疗8周后,治疗有效患者(定义为PANSS与基线比较的减分率≥50%)PSP评分增加(平均增加21.2)明显高于部分有效的患者(定义为PANSS与基线比较的减分率<50%,PSP增加10.2分).结论:个体和社会功能量表中文版是评估精神分裂症急性期和稳定期患者个人和社会功能的一个简洁、易操作、较稳定的工具,适用于临床实践或研究中使用.%Objective:To evaluate the reliability and validity of the Chinese version of the Personal and Social Performance scale (PSP-CHN) in patients with schizophrenia.Methods:Totally 165 out-patients and in-patients meeting the DSM-IV-TR criteria for schizophrenia were entered in the study.Ten of subjects was included the intra-rater reliability training.The Global Assessment of Functioning Scale (GAF) was regarded as the' gold standard' to investigate the validity of PSP-CHN,and the Positive and Negative Rating Scale was used to assess the severity of disease to explore the correlative validity,in the other 155 subjects.Five to seven days after the first PSP-CHN interview,the second PSP-CHN was evaluated by another investigator to assess the test-retest reliability among 66 subjects.Twenty-seven subjects with the score of Positive and Negative Syndrome Scale (PANSS) more than 60 were followed up for 8 weeks of standardized pharmacotherapy.By the end of 8 week of treatment,the PANSS and PSP-CHN were assessed again to explore the sensitivity of PSP-CHN.Results:The internal consistency (Cronbach α=0.84) and the inter-rater reliability (κ value=0.56,ICC=0.94 for PSP-CHN total score) were good.The test-retest reliability was high [intraclass correlation coefficient (ICC) of 0.95].The scale showed good construct validity with statistically significant correlations with the Global Assessment of Functioning Scale (GAF) (ICC of 0.95).The PSP-CHN score had a good negative correlation with the PANSS total score(r=-0.79,-0.57,-0.63 and -0.71,respectively,P<0.01).After 8 week treatment,PSP-CHN total score was increased with the improvement of PANSS,and the responder showed higher increasing of PSP-CHN total score (21.2) than those partial responder(10.2),significantly.Conclusion:The Chinese version of the PSP-CHN is a convenient and valid instrument to assess the personal and social functions of stabilized and acute patients with schizophrenia.