CINEICC - Center for Research in Neuropsychology and Cognitive Behavioral Intervention, University of Coimbra, Coimbra, Portugal.
Faculty of Psychology and Educational Sciences of the University of Coimbra, Coimbra, Portugal.
Eat Weight Disord. 2021 Oct;26(7):2127-2134. doi: 10.1007/s40519-020-01058-4. Epub 2020 Nov 2.
Orthorexia nervosa (ON) is considered a pathological fixation with healthy eating. Despite recent research focus, there is still a lot of inconsistent information concerning ON, including its definition and validity of its measuring tools. This study aimed to extend the current knowledge on ON, by developing and validating the Portuguese adaptation of the Dusseldorf Orthorexie Scale (DOS) and studying its prevalence and relationship with different psychological indicators, sex, BMI and dietary pattern.
Data were collected online, through self-report questionnaires, and two different samples were collected, with 513 (Sample 1) and 541 participants (Sample 2) from the general population.
DOS' one-dimensional factorial structure and reliability was confirmed. ON's prevalence was 10.52%. Results revealed that women present higher scores on DOS than men, but no differences were found regarding the BMI groups. DOS was positively related to all psychological indicators, with moderate and strong relationships with disordered eating and inflexible eating. Sample 2 was used to explore ON's differences between dietary patterns, with results demonstrating that omnivores present significantly lower levels of orthorexic tendencies, when compared with the vegetarian, vegan, and paleo groups.
The present study is the first to successfully validate a measure that assesses ON for the Portuguese population and adds to the existing literature in several other important ON aspects.
Level V-validation study.
饮食强迫症（ON）被认为是对健康饮食的一种病态痴迷。尽管最近的研究重点关注于此，但关于 ON 的信息仍然存在很多不一致之处，包括其定义和测量工具的有效性。本研究旨在通过开发和验证杜塞尔多夫饮食强迫症量表（DOS）的葡萄牙语版本，并研究其在不同心理指标、性别、BMI 和饮食模式中的流行程度及其与这些指标的关系，来扩展关于 ON 的现有知识。
数据通过在线自我报告问卷收集，共收集了两个不同样本，分别有 513 名（样本 1）和 541 名（样本 2）普通人群参与者。
DOS 的单因素结构和可靠性得到了确认。ON 的患病率为 10.52%。结果表明，女性在 DOS 上的得分高于男性，但 BMI 组之间没有差异。DOS 与所有心理指标呈正相关，与饮食失调和饮食不灵活呈中度和高度相关。样本 2 用于探索不同饮食模式下的 ON 差异，结果表明杂食者的饮食强迫症倾向明显低于素食者、素食者、素食者和古饮食组。
本研究首次成功验证了一种评估葡萄牙人群 ON 的测量工具，并在其他几个重要的 ON 方面增加了现有文献。
V 级验证研究。
