Rogoza Radoslaw, Hallit Souheil, Soufia Michel, Barthels Friederike, Obeid Sahar
Cardinal Stefan Wyszyński University in Warsaw, Warsaw, Poland.
Research Department, Psychiatric Hospital of the Cross, Jal Eddib, Lebanon.
J Eat Disord. 2021 Oct 16;9(1):130. doi: 10.1186/s40337-021-00488-4.
Orthorexia Nervosa (ON) is defined as a pathological preoccupation characterized by obsessive beliefs and compulsive behaviors regarding 'pure' eating behaviors. Many scales have been established and display good results regarding reliability and validity measures, including but not limited to ORTO-R (revised version of ORTO-15), Eating Habits Questionnaire, Teruel Orthorexia Scale (TOS) and the Düsseldorf Orthorexia Scale (DOS). Among these, the DOS seems to be a promising measure for multiple reasons. The current paper aims to validate the DOS, a measure of ON, in a non-Western population of Lebanese adolescents.
This was a cross-sectional designed study, conducted between May and June 2020, which enrolled 555 adolescents (15-18 years old; 75.7% females). Due the coronavirus pandemic outbreak, the data were gathered through snowball sampling using an online questionnaire. The DOS, TOS and ORTO-R scales were used in this study to screen for orthorexic tendencies and behaviors.
We tested four competing structural models of the DOS assessing its factorial validity. The results of the current investigation revealed that the one-factorial model is the best one to represent the structure of the questionnaire. We provided evidence for validity for the DOS through demonstrating that it correlates significantly with other measures of orthorexic behaviours (Teruel Orthorexia Scale and ORTO-R). Finally, we have gathered evidence that the orthorexic behaviours as measured by DOS are not associated with age (r = -.02; p = .589), household crowding index (r = .02; p = .578), and Body Mass Index (r = .04; p = .297). Yet, females as compared to males achieved higher scores (M = 20.07, SD = 6.38 vs M = 18.29, SD = 6.37; p = .005; d = .28).
The Arabic version of the DOS seems to be a structurally valid and internally consistent questionnaire measuring orthorexic eating behavior in a sample of Lebanese adolescents. This tool may be useful for psychologists, psychiatrists, dietitians and other clinicians in the assessment and the treatment of the multidimensional nature of ON.
正食癖（ON）被定义为一种病态的先占观念，其特征是对“纯净”饮食行为存在强迫观念和强迫行为。已经建立了许多量表，并且在信效度测量方面显示出良好的结果，包括但不限于ORTO-R（ORTO-15的修订版）、饮食习惯问卷、特鲁埃尔正食癖量表（TOS）和杜塞尔多夫正食癖量表（DOS）。其中，DOS由于多种原因似乎是一种很有前景的测量工具。本文旨在验证DOS（一种正食癖的测量工具）在黎巴嫩青少年这一非西方人群中的有效性。
这是一项横断面设计研究，于2020年5月至6月进行，纳入了555名青少年（15 - 18岁；75.7%为女性）。由于新冠疫情爆发，数据通过在线问卷采用滚雪球抽样的方式收集。本研究使用DOS、TOS和ORTO-R量表来筛查正食癖倾向和行为。
我们测试了评估DOS因子效度的四种竞争结构模型。当前调查结果显示单因素模型是最能代表该问卷结构的模型。我们通过证明它与其他正食癖行为测量工具（特鲁埃尔正食癖量表和ORTO-R）显著相关，为DOS的效度提供了证据。最后，我们收集到的证据表明，用DOS测量的正食癖行为与年龄（r = -0.02；p = 0.589）、家庭拥挤指数（r = 0.02；p = 0.578）和体重指数（r = 0.04；p = 0.297）无关。然而，女性得分高于男性（M = 20.07，SD = 6.38 对比 M = 18.29，SD = 6.37；p = 0.005；d = 0.28）。
DOS的阿拉伯语版本似乎是一个在结构上有效且内部一致的问卷，可用于测量黎巴嫩青少年样本中的正食癖饮食行为。这个工具可能对心理学家精神科医生、营养师和其他临床医生评估和治疗正食癖的多维度性质有用。
