Dietary assessment methodologies in eating disorders: a pilot comparative validation study exploring the diet history method.

IF 4.5 3区 医学 Q2 NUTRITION & DIETETICS
Melissa Hart, Kirrilly Pursey, Tracy Burrows, David Sibbritt
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Abstract

Objective: Dietary intake and sub-optimal nutrition have a significant impact on clinical risk, outcomes and mortality in people with an eating disorder. Despite the range of dietary patterns and nutritional issues, there is limited evidence to guide effective use of dietary assessment methods. The aim of this pilot study was to examine the validity of the diet history against routine nutritional biomarkers in female adults with an eating disorder attending a regional outpatient service.

Method: This secondary data analysis utilised demographics, nutrient intakes from diet history and nutritional biomarker data. Spearman's rank correlation, simple and quadratic weighted kappa statistics and the Bland-Altman method were used to explore validity of the diet history compared to nutritional biomarkers.

Results: Thirteen female participants (median age 24 years; median BMI 19 kg/m2) with an eating disorder were included. Energy-adjusted dietary cholesterol and serum triglycerides showed moderate agreement (simple kappa K = 0.56, p = 0.04), and dietary iron and serum total iron-binding capacity showed moderate-good agreement (simple kappa K = 0.48, p = 0.04; weighted kappa K = 0.68, p = 0.03). Dietary iron and serum total iron-binding capacity were only significantly correlated when dietary supplements were included (r = 0.89, p = 0.02). Dietary estimates of protein and iron improved with larger intakes.

Conclusions: This pilot study suggests the diet history may be useful for assessing dietary intake in people with an eating disorder and highlights the importance of targeted questioning around dietary supplement use. Determining the validity of dietary assessment methods across ages, diagnoses and settings is required.

饮食失调的饮食评估方法:一项探索饮食史方法的试点比较验证研究。
目的:饮食摄入和次优营养对饮食失调患者的临床风险、结局和死亡率有显著影响。尽管饮食模式和营养问题的范围很广,但指导有效使用饮食评估方法的证据有限。本初步研究的目的是检查饮食史与常规营养生物标志物在参加地区门诊服务的饮食失调女性成人中的有效性。方法:该二次数据分析利用了人口统计学、饮食史中的营养摄入量和营养生物标志物数据。采用Spearman’s秩相关、简单和二次加权kappa统计以及Bland-Altman方法来探讨饮食史与营养生物标志物的有效性。结果:13名女性参与者(中位年龄24岁,中位BMI 19 kg/m2)患有饮食失调。能量调节膳食胆固醇和血清甘油三酯具有中等一致性(简单kappa K = 0.56, p = 0.04),膳食铁和血清总铁结合能力具有中等-良好一致性(简单kappa K = 0.48, p = 0.04;加权kappa K = 0.68, p = 0.03)。膳食铁与血清总铁结合力仅在添加膳食补充剂时呈显著相关(r = 0.89, p = 0.02)。饮食中蛋白质和铁的估计值随着摄入量的增加而提高。结论:这项初步研究表明,饮食史可能有助于评估饮食失调患者的饮食摄入量,并强调了对膳食补充剂使用进行针对性询问的重要性。需要确定饮食评估方法在不同年龄、诊断和环境下的有效性。
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来源期刊
Journal of Eating Disorders
Journal of Eating Disorders Neuroscience-Behavioral Neuroscience
CiteScore
5.30
自引率
17.10%
发文量
161
审稿时长
16 weeks
期刊介绍: Journal of Eating Disorders is the first open access, peer-reviewed journal publishing leading research in the science and clinical practice of eating disorders. It disseminates research that provides answers to the important issues and key challenges in the field of eating disorders and to facilitate translation of evidence into practice. The journal publishes research on all aspects of eating disorders namely their epidemiology, nature, determinants, neurobiology, prevention, treatment and outcomes. The scope includes, but is not limited to anorexia nervosa, bulimia nervosa, binge eating disorder and other eating disorders. Related areas such as important co-morbidities, obesity, body image, appetite, food and eating are also included. Articles about research methodology and assessment are welcomed where they advance the field of eating disorders.
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