Purpose: Although research on orthorexia nervosa (ON) has developed in recent years, there exists a continuous need to develop valid tools to assess ON risk, according to strict diagnostic criteria. The present study aims to conduct Polish adaptation and validation of the Authorized Bratman Orthorexia Self-Test (ABOST), through a comparison of dichotomous and continuous Likert response scales.
Participants and Methods: This cross-sectional study involved 472 people with mean age of 27 years (ranging between 18 and 78 years, M = 26.88, SD = 10.40). The survey included demographic questions and measures of orthorexia (the ABOST and ORTO-15), eating disorders (EAT-26), body mass index (BMI), obsessive–compulsive disorder (OCI-R), anxiety (GAD-7), and depression (PHQ-9). The following statistical tests were performed to explore the psychometric properties of the ABOST: descriptive statistics, Student’s t-test, Pearson’s correlation, Cronbach’s α reliability, exploratory factor analysis (EFA), and confirmatory factor analysis (CFA).
Results: The ABOST using a five-point Likert scale for responses demonstrated good psychometric properties. The CFA goodness-of-fit indices confirmed the one-factor solution. Positive correlations were found between the ABOST and the ORTO-15, EAT-26, OCI-R, GAD-7, and PHQ-9. Women scored higher in the ABOST than men, while BMI was unrelated to the ABOST.
Conclusion: The ABOST using the Likert scale provides a reliable and valid instrument to assess ON risk, as indicated by the face, structural, and convergent validity results. However, more research in various countries is needed, in order to verify the results of this study.

Keywords: anxiety, depression, eating disorder, gender differences, obsessive-compulsive disorder, orthorexia nervosa


中文翻译：

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授权 Bratman Orthorexia 自测 (ABOST) 的验证和波兰语改编：二分法和连续李克特型反应量表的比较

目的：尽管近年来对神经性厌食症 (ON) 的研究有所发展，但仍需要根据严格的诊断标准开发有效的工具来评估 ON 风险。本研究旨在通过比较二分法和连续李克特反应量表，对授权的 Bratman Orthorexia 自测 (ABOST) 进行波兰改编和验证。
参与者和方法：这项横断面研究涉及 472 人，平均年龄为 27 岁（介于 18 和 78 岁之间，M = 26.88，SD= 10.40)。该调查包括人口统计学问题和对食欲不振（ABOST 和 ORTO-15）、饮食失调（EAT-26）、体重指数（BMI）、强迫症（OCI-R）、焦虑（GAD-7）、和抑郁症（PHQ-9）。进行以下统计测试以探索 ABOST 的心理测量特性：描述性统计、学生t检验、Pearson 相关性、Cronbach α 可靠性、探索性因素分析 (EFA) 和验证性因素分析 (CFA)。
结果：使用李克特五点量表的 ABOST 表现出良好的心理测量特性。CFA 拟合优度指数证实了单因素解决方案。ABOST 与 ORTO-15、EAT-26、OCI-R、GAD-7 和 PHQ-9 之间存在正相关。女性在 ABOST 中的得分高于男性，而 BMI 与 ABOST 无关。
结论：使用李克特量表的 ABOST 提供了一种可靠和有效的工具来评估 ON 风险，如面部、结构和收敛效度结果所示。然而，需要在各个国家进行更多的研究，以验证这项研究的结果。

关键词：焦虑、抑郁、进食障碍、性别差异、强迫症、神经性厌食症