title: Validation of the Chinese Version of the Cognitive Symptom Checklist-Work-21 in Breast Cancer Survivors.
abstract: OBJECTIVE
  The purpose of this study was to translate the Cognitive Symptom Checklist-Work-21 (CSC-W21), into Chinese, and culturally adapt and validate the Chinese version, a measure of work-related cognitive limitations in occupationally active breast cancer survivors (BCS).
  
  
  METHODS
  The translation of the English version of the CSC-W21 followed a systematic procedure. Exploratory factor analysis was used to identify factor structures. The internal consistency of the factors was assessed by calculating the Cronbach's alpha reliability coefficients. Item- and scale-level content validity was determined. The intra-class correlation coefficient (ICC) was used to analyze test-retest reliability. A total of two hundred and twenty BCS participated in the psychometric testing of the CSC-W21-C. The construct validity of the total score of the CSC-W21-C was determined through convergent validity and an analysis of its relationship with the four subscales of the Work Limitations Questionnaire (WLQ), a measure of four types of job task difficulties.
  
  
  RESULTS
  The CSC-W21-C demonstrated item- and scale-level content validity (>.80). The factor structure of the CSC-W21-C was similar to the original English version. The internal consistency of the subscales of the CSC-W21-C ranged from .84 to .95. The ICC was between .80 and .96 indicating good test-retest reliability. The CSC-W21-C was significantly correlated with the WLQ, particularly the mental-interpersonal subscale, where it accounted for 27.3 % of the total variance.
  
  
  CONCLUSIONS
  The findings indicate that the CSC-W21-C has sound measurement properties that strongly suggest it can be used in future assessment and intervention research to identify cognitive limitations related to specific work tasks in BCS.
authors: Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong. andy.cheng@polyu.edu.hk.
authors: Andy S K
authors: AS
authors: Cheng
authors: Department of Obstetrics, The Third Affiliated Hospital of Guangzhou Medical University, No. 63 DouBao Road, Liwan District, Guangzhou, 510150, China.
authors: Yingchun
authors: Y
authors: Zeng
authors: Departments of Medical and Clinical Psychology and Preventive Medicine and Biometrics, Uniformed Services University of the Health Sciences, Bethesda, MD, USA.
authors: Michael
authors: M
authors: Feuerstein
mesh_terms: D000328:Adult; D001943:Breast Neoplasms / Q000523:psychology* / Q000628:therapy; D057189:Checklist; D002681:China; D003071:Cognition; D003430:Cross-Sectional Studies; D004651:Employment / Q000523:psychology; D005260:Female; D006801:Humans; D007398:Interpersonal Relations; D008875:Middle Aged; D011594:Psychometrics; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires; D017741:Survivors / Q000523:psychology*; D017748:Time Management; D014175:Translating; D014938:Work Capacity Evaluation; D016526:Workload / Q000523:psychology; D055815:Young Adult
keywords: Breast cancer survivor; Chinese translation; Self-report measure; Validation; Work-related cognitive limitations