Validation of the Chinese version of the 4-item Negative Symptom Assessment in schizophrenia patients with mild to moderate symptoms
10.3760/cma.j.cn113661-20200226-00059
- VernacularTitle:阴性症状评估量表4条目中文版在轻中度精神分裂症患者中的信效度研究
- Author:
Chengcheng PU
1
;
Bingjie HUANG
1
;
Qi MIAO
1
;
Ke MA
1
;
Dan ZHANG
1
;
Zhang CHENG
1
;
Chuan SHI
1
;
Xin YU
1
Author Information
1. 北京大学第六医院 北京大学精神卫生研究所 国家卫生健康委员会精神卫生学重点实验室（北京大学） 国家精神心理疾病临床医学研究中心（北京大学第六医院） 100191
- Publication Type:Journal Article
- Keywords:
Schizophrenia;
Negative symptom;
Reliability;
Validity
- From:
Chinese Journal of Psychiatry
2020;53(6):508-511
- CountryChina
- Language:Chinese
-
Abstract:
Objectives:This study aims to evaluate the reliability and validity of the Chinese version of the 4-item Negative Symptom Assessment (NSA-4) in patients with schizophrenia.Methods:A total of 172 patients with schizophrenia were recruited and assessed with the Chinese version of NSA-4, the Scale for Assessment of Negative Symptoms (SANS), PANSS, and the Calgary Depression Scale for Schizophrenia (CDSS). Cronbach′s α was computed to evaluate internal consistency. Intraclass correlation coefficients (ICCs) were computed to evaluate the inter-rater reliability and Spearman's correlation analysis was used to evaluate the test-retest reliability. Spearman′s correlation analyses were conducted between NSA-4 and SANS, PANSS, and CDSS to evaluate concurrent validity, convergent validity, and discriminant validity, respectively.Results:Cronbach′s α for the Chinese version of the NSA-4 was 0.788. ICCs were 0.661-0.958 and test-retest reliability was 0.860. The Chinese version of the NSA-4 showed satisfactory concurrent validity considering its high correlation with SANS ( r=0.801), excellent convergent validity considering its high correlation with PANSS total score and negative symptom subscale score ( r=0.528-0.834), and good discriminant validity considering its weak correlation with scores of the positive symptom subscale and general psychopathology subscale of PANSS and CDSS ( r=0.069-0.358). Conclusion:The Chinese version of the NSA-4 has good psychometric properties. It is useful for rapid assessment of negative symptoms in patients with schizophrenia.
