关键词: 肿瘤, 韧性, 心理, 项目反应理论, 信度, 效度, 截断值

Abstract: Objective　This study was designed to examine the psychometric properties of the Chinese version of 10-item Connor-Davidson Resilience Scale（CD-RISC-10） in a sample of Chinese patients with cancer.Methods　This study was conducted between December 2015 and July 2016.The psychometric properties of Chinese version of CD-RISC-10 were tested in a randomly selected sample of 520 cancer cases from the First Affiliated Hospital of Guangzhou University of Chinese Medicine，Sun Yat-Sen University Cancer Center and Guangdong Provincial Hospital of Chinese Medicine.The participants were also surveyed by other 2 scales〔Chinese version of Hospital Anxiety and Depression Scale（HADS） and Chinese version of Strategies Used by People to Promote Health（SUPPH）〕 to test their associations with the CD-RISC-10 and get the cut-off point of the CD-RISC-10.424（81.5%） responded to the survey positively，and 50 of them were randomly selected based on a Microsoft Excel-based algorithm and were resurveyed by the Chinese version of CD-RISC-10 two weeks later.The unidimensionality for the Chinese version of CD-RISC-10 was investigated by a two-parameter item response analysis，item analysis was performed using GRM.Furthermore，its convergent validity and retest reliability and cut-off point were analyzed.Results　The Chinese version of CD-RISC-10 retained its original undimensional structure，which could explain 58.06% of the total variance.The item separation index（ISI） was 0.914.The item difficulty was ideally normal，discrimination ability ranged from 1.17 to 1.82 and fit residual value of every item was within the range of -2.5-2.5.There existed no disordered threshold among all the items and the step of thresholds varied from 1.08 to 3.17 logits.The Chinese version of CD-RISC-10 was negatively associated with the Chinese version of HADS and its anxiety and depression subscales but positively associated with the Chinese version of SUPPH and its subscales in terms of scoring（P<0.05）．The retest reliability coefficient，cut-off point，sensitivity and specificity for the Chinese version of CD-RISC-10 was 0.855，21.5，0.735，0.833，respectively.Conclusion　The Chinese version of CD-RISC-10 has a stable undimensional structure with good monotonicity，ideally normal item difficulty，reasonable distribution of step of thresholds，as well as good reliability and external validity，so it is suitable to be adapted in clinical settings for assessing the psychological status of Chinese cancer patients.

Key words: Neoplasms；Resilience, psychological；Item response theory；Reliability；Validity；Cut-off