Abstract: Objective: To translate the English version of Concerns About Recurrence Scale (CARS) into Chinese and evaluate the reliability and validity of the chinese version of CARS. Methods: The CARS was translated and adapted according to standard forward-back translation techniques. Cross-cultural revision of the translated CARS was carried out through group discussion and pretesting. A total of 261 breast cancer patients were recruited to test its reliability and validity. Results: Factor analysis indicated five dimensions of the scale and the cumulative variance contribution rate was 58.4%. Internal consistency was confirmed by Cronbach’s α coefficient of 0.922 , the Cronbach’s α of five factors was 0.871, 0.845, 0.786, 0.746, and 0.638 respectively. The split half reliability was 0.890 for total scale and 0.740~0.896 for its dimensions. The test-retest reliability was 0.956 for CARS and 0.819~0.943 for its dimensions. The content validity index was 0.884. Conclusion: The Chinese version of CARS shows good reliability and validity, and can be used as a valid tool to assess the fear of cancer recurrence of breast cancer patients in China.

Key words: breast neoplasm; Concerns About Recurrence Scale (CARS); reliability; validity