School of Medicine, Postgraduate Program in Pediatrics and Child Health and Postgraduate Program in Medicine and Health Sciences, Pontifícia Universidade Católica de Rio Grande do Sul (PUCRS), Porto Alegre, Brazil.
School of Medicine, Postgraduate Program in Pediatrics and Child Health, Pontifícia Universidade Católica de Rio Grande do Sul (PUCRS), Porto Alegre, Brazil.
Aten Primaria. 2023 Apr;55(4):102599. doi: 10.1016/j.aprim.2023.102599. Epub 2023 Mar 9.
This study aimed to develop the Brazilian instrument for assessing eating disorders in children and adolescents and test its psychometric quality using item response theory (IRT).
Cross-sectional study.
Participants aged between five and twelve years old of both sexes.
IRT logistic model of two parameters was used to evaluate the item's severity and discrimination and test information curve of symptoms of eating disorders' latent trait symptoms. Content validity and reliability were also assessed. The IRT evaluation suggested that the instrument contained items that performed differently concerning severity, discrimination, and test information curve presented good accuracy.
There was agreement on the clarity of language (83.3%) and theoretical relevance (91.7%), indicating good content validity. The value of the Cronbach's Alpha was 0.63 (95% confidence interval), and the result of the Spearman-Brown test was 0.65.
These results indicate good performance of the screening tool in assessing the level of eating disorders in children and adolescents.
本研究旨在开发用于评估儿童和青少年进食障碍的巴西工具，并使用项目反应理论（IRT）检验其心理测量学质量。
横断面研究。
年龄在 5 至 12 岁之间的男女参与者。
采用双参数逻辑IRT 模型评估项目的严重程度和区分度，并检验进食障碍潜在特质症状的症状测试信息曲线。还评估了内容效度和信度。IRT 评估表明，该工具包含的项目在严重程度、区分度和测试信息曲线方面表现不同，具有较好的准确性。
语言清晰度（83.3%）和理论相关性（91.7%）方面的共识较好，表明内容效度良好。Cronbach's Alpha 值为 0.63（95%置信区间），Spearman-Brown 检验结果为 0.65。
这些结果表明，该筛查工具在评估儿童和青少年进食障碍水平方面表现良好。
