Missbach Benjamin, Hinterbuchinger Barbara, Dreiseitl Verena, Zellhofer Silvia, Kurz Carina, König Jürgen
Department of Nutritional Sciences, University of Vienna, Vienna, Austria.
Department of Psychiatry and Psychotherapy, Division of Social Psychiatry, Medical University of Vienna, Vienna, Austria.
PLoS One. 2015 Aug 17;10(8):e0135772. doi: 10.1371/journal.pone.0135772. eCollection 2015.
The characteristic trait of individuals developing a pathological obsession and preoccupation with healthy foods and a restrictive and avoidant eating behavior is described as orthorexia nervosa (ON). For ON, neither universal diagnosis criteria nor valid tools for large-scale epidemiologic assessment are available in the literature. The aim of the current study is to analyze the psychometric properties of a translated German version of the ORTO-15 questionnaire. The German version of the ORTO-15, a eating behavior and dieting habits questionnaire were completed by 1029 German-speaking participants (74.6% female) aged between 19 and 70 years (M = 31.21 ± 10.43 years). Our results showed that after confirmatory factor analysis, the best fitting model of the original version is a single-factor structure (9-item shortened version: ORTO-9-GE). The final model showed only moderate internal consistency (Cronbach's alpha = .67), even after omitting 40% of the original question. A total of 69.1% participants showed orthorectic tendencies. Orthorectic tendencies are associated with special eating behavior features (dieting frequency, vegetarian and vegan diet). Education level did not influence ON tendency and nutritional students did not show higher ON tendency compared to students from other disciplines. This study is the first attempt to translate and to evaluate the psychometric properties of a German version of the ORTO-15 questionnaire. The ORTO-9-GE questionnaire, however, is only a mediocre tool for assessing orthorectic tendencies in individuals and shows moderate reliability and internal consistency. Our research suggests, that future studies are needed to provide more reliable and valid assessment tools to investigate orthorexia nervosa.
那些对健康食品产生病态痴迷和过度关注，并表现出限制性和回避性饮食行为的个体的特征性特质，被描述为神经性正食症（ON）。对于神经性正食症，文献中既没有通用的诊断标准，也没有用于大规模流行病学评估的有效工具。本研究的目的是分析ORTO - 15问卷德文翻译版的心理测量特性。1029名年龄在19至70岁之间（M = 31.21±10.43岁）的德语使用者（74.6%为女性）完成了德文版的ORTO - 15，这是一份饮食行为和节食习惯问卷。我们的结果表明，在验证性因素分析之后，原始版本的最佳拟合模型是单因素结构（9项简化版：ORTO - 9 - GE）。最终模型仅显示出中等程度的内部一致性（克朗巴哈系数α = 0.67），即使在省略了40%的原始问题之后。共有69.1%的参与者表现出正食倾向。正食倾向与特殊的饮食行为特征（节食频率、素食和纯素食饮食）相关。教育水平并未影响神经性正食症倾向，与其他学科的学生相比，营养专业的学生并未表现出更高的神经性正食症倾向。本研究是首次尝试翻译并评估ORTO - 15问卷德文版的心理测量特性。然而，ORTO - 9 - GE问卷只是评估个体正食倾向的一个普通工具，显示出中等的信度和内部一致性。我们的研究表明，未来需要开展更多研究以提供更可靠有效的评估工具来调查神经性正食症。
