Wan-Lin Li1, Si-Xian Tan1, Rui-Qing Ouyang1, Yun-Feng Cui1, Jun-Rong Ma1, Chen Cheng1, Ying-Jun Mu1, Shi-Wen Zhang1, Lu Zheng1, Peng Xiong1, Wan-Ze Ni1, Lu-Yao Li1, Li-Na Fan1, Yu-Mei Luo1, Ying-Lin Yu1, Zi-Mo Wang1, Fan Ding1, Qiao-Fei Pan1, An-Yi Jiang1, Jing-Min Huang1, Wen-Ting Cao2, Jun Liu3, Yan-Bin Ye4, Fang-Fang Zeng5. 1. Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, No. 601 Huangpu Road West, Guangzhou, 510632, Guangdong, China. 2. Department of Medical Statistics and Epidemiology, School of Public Health, Hainan Medical University, Haikou, 571199, Hainan, China. 3. Department of Preventive Medicine Laboratory, School of Public Health, Zunyi Medical University, Zunyi, 563000, Guizhou, China. 4. Department of Nutrition, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080, Guangdong, China. 5. Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, No. 601 Huangpu Road West, Guangzhou, 510632, Guangdong, China. zengffjnu@126.com.
Abstract
PURPOSE: The main objective of the study was to translate, validate, and compare the Chinese ORTO scales (ORTO-15 and ORTO-R). The secondary objective was to assess factors that may be related with risk of orthorexia nervosa (ON). METHODS: Two cross-sectional surveys were conducted on March-to-June 2021 for ORTO-15 and April 2022 for ORTO-R. ORTO questionnaires were translated into Chinese using the forward-backward-forward method. Exploratory factor analysis (EFA), discriminant validity and confirmatory factor analysis (CFA) were used to examine the construct validity of the questionnaires. The internal consistency was assessed using the Cronbach alpha coefficient and the test-retest reliability. Multivariate linear regression analysis was used to explore potential factors related with ON scores. RESULTS: Totally, 1289 and 1084 eligible participants were included for assessment of ORTO-15 and ORTO-R, with the mean age of 20.9 ± 2.0 years and 21.0 ± 2.3 years. The internal consistency of Chinese ORTO-15 scale and ORTO-R scale were both satisfactory (α = 0.79, ICC = 0.79; α = 0.77, ICC = 0.82). However, all ORTO-15 models showed a poor fit using CFA whereas the ORTO-R was characterized by acceptable goodness-of-fit. Multivariate linear regression indicated that physical activities and mental disorders were positively associated with ON risk assessed by both ORTO-R and ORTO-15. CONCLUSION: The Chinese ORTO-R scale was a more reliable tool to screen for ON tendencies than the Chinese version of ORTO-15. Mental disorders and physical activities might be associated with the increased ON risk. LEVEL OF EVIDENCE: Level V (descriptive cross-sectional study).
PURPOSE: The main objective of the study was to translate, validate, and compare the Chinese ORTO scales (ORTO-15 and ORTO-R). The secondary objective was to assess factors that may be related with risk of orthorexia nervosa (ON). METHODS: Two cross-sectional surveys were conducted on March-to-June 2021 for ORTO-15 and April 2022 for ORTO-R. ORTO questionnaires were translated into Chinese using the forward-backward-forward method. Exploratory factor analysis (EFA), discriminant validity and confirmatory factor analysis (CFA) were used to examine the construct validity of the questionnaires. The internal consistency was assessed using the Cronbach alpha coefficient and the test-retest reliability. Multivariate linear regression analysis was used to explore potential factors related with ON scores. RESULTS: Totally, 1289 and 1084 eligible participants were included for assessment of ORTO-15 and ORTO-R, with the mean age of 20.9 ± 2.0 years and 21.0 ± 2.3 years. The internal consistency of Chinese ORTO-15 scale and ORTO-R scale were both satisfactory (α = 0.79, ICC = 0.79; α = 0.77, ICC = 0.82). However, all ORTO-15 models showed a poor fit using CFA whereas the ORTO-R was characterized by acceptable goodness-of-fit. Multivariate linear regression indicated that physical activities and mental disorders were positively associated with ON risk assessed by both ORTO-R and ORTO-15. CONCLUSION: The Chinese ORTO-R scale was a more reliable tool to screen for ON tendencies than the Chinese version of ORTO-15. Mental disorders and physical activities might be associated with the increased ON risk. LEVEL OF EVIDENCE: Level V (descriptive cross-sectional study).
Authors: María Laura Parra-Fernandez; Teresa Rodríguez-Cano; María Dolores Onieva-Zafra; Maria José Perez-Haro; Víctor Casero-Alonso; Juan Carlos Muñoz Camargo; Blanca Notario-Pacheco Journal: PLoS One Date: 2018-01-10 Impact factor: 3.240