Objective

The Project EAT Disordered Eating Attitudes and Behaviors (DEAB) scale was created from disordered eating attitudes and behaviors that tend to interrelate. To examine the appropriateness of the scale, we assessed the fit (i.e., how well a single latent factor fits a set of interrelated disordered eating attitudes and behaviors) and the convergent validity over time.

Method

Five interrelated disordered eating attitudes and behaviors were assessed in a longitudinal cohort (Project EAT, age 11 to 18 in 1998–1999, N = 1492). Confirmatory factor analysis examined the appropriateness of the DEAB scale. To examine whether individual variables function differently in relation to the latent construct across time, two models were compared: one requiring indicator-level factor loadings to remain equivalent across three time points (baseline [EAT-I], five-year follow-up [EAT-II], and 15-year follow-up [EAT-IV]), and the second allowing the factor loadings to vary over time. To examine the convergent validity, Pearson correlation with body satisfaction, self-esteem, depressive symptoms, and BMI was compared across time.

Results

The fit indices for a single factor structure supported the use of the DEAB scale over time (standardized loadings: 0.60–0.87, 0.67–0.89, 0.59–0.77 at EAT-I, II, and IV respectively). As hypothesized, compared to fewer number of disordered eating attitudes and behaviors, greater number of attitudes and behaviors was associated with lower body satisfaction and self-esteem, and greater depressive symptoms and BMI (p < .01).

Discussion

The Project EAT DEAB scale can be used as a proxy to measure the severity of disordered eating attitudes and behaviors over time in population-based studies.

中文翻译：

---

无序饮食态度和行为的单一总结性全球尺度：来自 Project EAT 的结果，这是一项为期 15 年的基于人群的纵向研究。

客观的

EAT 项目无序饮食态度和行为 (DEAB) 量表是根据往往相互关联的无序饮食态度和行为创建的。为了检查量表的适当性，我们评估了拟合（即，单个潜在因素与一组相互关联的无序饮食态度和行为的拟合程度）和随时间的收敛效度。

方法

在纵向队列中评估了五种相互关联的无序饮食态度和行为（项目 EAT，1998-1999 年 11 至 18 岁，N  = 1492）。验证性因素分析检验了 DEAB 量表的适用性。为了检查各个变量在不同时间与潜在构造相关的功能是否不同，比较了两种模型：一种需要指标水平的因子载荷在三个时间点（基线 [EAT-I]、五年随访 [ EAT-II] 和 15 年随访 [EAT-IV]），第二个允许因子载荷随时间变化。为了检验收敛效度，我们比较了 Pearson 与身体满意度、自尊、抑郁症状和 BMI 的相关性。

结果

单因素结构的拟合指数支持随时间推移使用 DEAB 量表（标准化负荷：EAT-I、II 和 IV 分别为 0.60-0.87、0.67-0.89、0.59-0.77）。正如假设的那样，与较少数量的无序饮食态度和行为相比，较多的态度和行为与较低的身体满意度和自尊以及更严重的抑郁症状和 BMI 相关 ( p  < .01)。

讨论

Project EAT DEAB 量表可用作衡量在基于人群的研究中随时间推移的无序饮食态度和行为严重程度的代理。