关键词: 乳腺肿瘤, 幸存患者, 自我效能, 信度, 效度

Abstract: Background　Self-efficacy contributes to symptom management of cancer survivors,ultimately overall quality of life can be improved.Objective　To translate the Breast Cancer Survivors Self-efficacy Scale （BCSES） into Chinese and to test the reliability and validity of the Chinese version of BCSES （C-BCSES）.Methods　By using convenience sampling method,250 breast cancer survivors who met inclusion criteria in the First Affiliated Hospital of Zhengzhou University were selected as study subjects.The BCSES was translated into Chinese version by using Brinslin’s translation model.From July 2015 to November 2015,the C-BCSES and the Chinese version of general self-efficacy scale （GSES） were used to conduct a survey among the breast cancer survivors.The reliability and validity of C-BCSES were analyzed.Results　A total of 250 questionnaires were distributed,and 242 questionnaires were returned with an effective recovery rate of 96.8%.Patients were sorted according to the score of the C-BCSES in descending order,31.0% （75/242） of patients who got the highest score were included in high score group,and 31.4% （76/242） of patients who got the lowest score were included in low score group.The score of each item in low score group was significantly lower than that in high score group （P<0.05）.The average content validity index of C-BCSES was 0.913,the content validity index of items ranged from 0.821 to 1.000.The total score was positively correlated with each item score （P<0.05）.The KMO was 0.825,and Bartlett’s test was also acceptable with P<0.001 （χ2=530.692）,thus exploratory factor analysis can be performed.One factor with eigenvalue equal to or greater than 1.000 was extracted by exploratory factor analysis,the cumulative contribution rate of which was 47.362%,and the load value of each item was greater than 0.40.Confirmatory factor analysis was performed to support the results,with an acceptable fit （χ2/df =1.228,goodness-of-fit index=0.915,adjusted goodness-of-fit index=0.901,root-mean-square error of approximation=0.042,comparative goodness-of-fit index=0.923）.The score of C-BCSES was positively correlated with score of Chinese version of GSES （r=0.518,P<0.01）.The Cronbach’s α coefficient of C-BCSES was 0.912,the split half reliability coefficient was 0.845,the test-retest coefficient was 0.706.Conclusion　The C-BCSES has been proved to be reliable and valid,which can be used to evaluate self-efficacy of breast cancer survivors.

Key words: Breast neoplasms, Survivors, Self-efficacy, Reliability, Validity