Novel dietary intake assessment in populations with poor literacy

背景與目的：文化與/或環境障礙是評估農村人口飲食攝取的挑戰。我們的目地為評估一份適用於居住在貧困的南印度農村人口的餐食回憶問卷的正確性。方法與研究設計：飲食資料以回憶法及膳食秤重法收集並比較。資料來自於19-85歲居住在Andhra Pradesh農村的45 名便利取樣的成人。由一名研究者加上受過訓的田野工作者的協助，在家戶中進行膳食秤重紀錄（WMRs）。翌日，田野工作者會進行同一位參與者的回憶訪視。有八個實際尺寸的南印度食物份量圖片被用以輔助參與者回憶，一個營養素資料庫用以計算營養素攝取量被發展。以皮爾森相關評估膳食回憶法及WMRs所計算的熱量及營養素攝取相關強度。以最小積差迴歸評估固定的及比例的偏差。Bland-Altman圖被用以以測量系統或差別偏差。結果：兩種方法所計算的熱量及營養素有顯著相關性（r^2=0.19-0.67，p＜0.001）。Bland-Altman圖沒有發現系統性偏差。回憶法在蛋白質及脂肪攝取量有等比例低估的情形。結論：在印度農村族群，因應文化的餐食回憶問卷可提供評估熱量、巨量營養素及部分微量營養素的正確測量。

關鍵字

飲食回憶；餐食秤重紀錄；農村；缺點；南印度

並列摘要

Background and Objectives: Cultural and/or environmental barriers make the assessment of dietary intake in rural populations challenging. We aimed to assess the accuracy of a meal recall questionnaire, adapted for use with impoverished South Indian populations living in rural areas. Methods and Study Design: Dietary data collected by recall versus weighed meals were compared. Data were obtained from 45 adults aged 19-85 years, living in rural Andhra Pradesh, who were recruited by convenience sampling. Weighed meal records (WMRs) were conducted in the household by a researcher aided by a trained field worker. The following day, field workers conducted a recall interview with the same participant. Eight life size photographs of portions of South Indian foods were created to aid each participant’s recall and a database of nutrients was developed to calculate nutrient intake. Pearson correlations were used to assess the strength of associations between intake of energy and nutrients calculated from meal recalls versus WMRs. Least products regression was conducted to examine fixed and proportional bias. Bland-Altman plots were constructed to measure systematic or differential bias. Results: Significant correlations were observed between estimates for energy and nutrients obtained by the two methods (r^2=0.19-0.67, p＜0.001). No systematic bias was detected by Bland-Altman plots. Recall method underestimated the intake of protein and fat in a manner proportional to the level of intake. Conclusions: Our culturally adapted meal recall questionnaire provides an accurate measure for assessment of the intake of energy, macronutrients and some micronutrients in rural Indian populations.

並列關鍵字

food recall ； weighed meal record ； rural ； disadvantage ； South India

國際替代計量

Novel dietary intake assessment in populations with poor literacy

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