Zhongguo quanke yixue (Mar 2023)
Reliability and Validity of the Chinese Version of Repetitive Eating Questionnaire for Patients Undergoing Bariatric Surgery
Abstract
Background The grazing behavior after bariatric surgery is significantly related to postoperative weight regain, and its incidence will increase with the extension of time after surgery. So it is particularly important to early detect and accurately evaluate the grazing behavior of patients undergoing bariatric surgery. At present, the assessment tools for grazing behavior in these patients in China are still lacking. Objective To translate the Repetitive Eating Questionnaire〔Rep (eat) -Q) 〕into Chinese and evaluate its reliability and validity among patients undergoing bariatric surgery. Methods The Brislin's model of translation was adopted for translation. We developed the Chinese version of Rep (eat) -Q following the process of translation of the English version of the Rep (eat) -Q, back translation, expert review and a pilot study. On 2022-08-31, patients undergoing bariatric surgery admitted to the bariatric follow-up clinic of the First Affiliated Hospital with Nanjing Medical University from March to August 2022 were selected for the study using convenience sampling. Then we used the general information questionnaire, Chinese version of Rep (eat) -Q and the 21-item Three-Factor Eating Questionnaire (TFEQ-R21) to conduct a survey among 294 patients undergoing bariatric surgery to test the reliability and validity of the Chinese version of Rep (eat) -Q. Results According to the score of the Chinese version of Rep (eat) -Q, these patients were divided into high-score group (n=79) and low-score group (n=78) by the critical ratio. High-score group scored higher in each item of the Chinese version of Rep (eat) -Q compared with the low-score group (P<0.05) . The score of each item in the Chinese version of Rep (eat) -Q was linear positively correlated with the total score (r=0.368-0.782, P<0.05) . The value of Cronbach's α for the scale, repetitive eating subscale and compulsive grazing subscale was 0.943, 0.928 and 0.898, respectively. The value of split-half reliability for the scale, repetitive eating subscale and compulsive grazing subscale was 0.835, 0.938 and 0.891, respectively. And the value of test-retest reliability of the scale, repetitive eating subscale and compulsive grazing subscale was 0.867, 0.800, and 0.836, respectively. The item-level content validity index (CVI) ranged from 0.80 to 1.00. The scale-level CVI /universal agreement and S-CVI/average were 0.92 and 0.98, respectively. Two common factors were obtained after varimax orthogonal rotation by principal component analysis, whose eigenvalues were 7.086, and 1.596, respectively, explaining 72.35% of the total variance. The factor loading values of all items ranged 0.637 to 0.878. The confirmatory factor analysis indicated that the values ofχ2/df, GFI, AGFI, NFI, IFI, CFI and RMSEA were 2.211, 0.905, 0.860, 0.920, 0.955, 0.954, and 0.080, respectively. 294 patients' total score of the Chinese version of Rep (eat) -Q showed a significant correlation with three dimensions of the TFEQ-R21 (P<0.05) . Conclusion The Chinese version of Rep (eat) -Q has good reliability and validity, and is simple and easy-to-operate, which can be used to assess the grazing behavior among Chinese patients undergoing bariatric surgery.
Keywords
