Validation and reproducibility of an FFQ for use among adults in Botswana
Validation and reproducibility of an FFQ for use among adults in Botswana
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DOI：
10.1017/s1368980012004636
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发表时间：
2013-11-01
影响因子：
3.2
通讯作者：
Jackson-Malete, Jose
中科院分区：
文献类型：
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作者：
Jackson, Maria D.;Motswagole, Boitumelo S.;Jackson-Malete, Jose
目的：评估由访谈员管理的 122 项定量 FFQ 的有效性和可重复性，该 FFQ 旨在确定博茨瓦纳成年人的食物和营养摄入量。设计：通过将营养素和食物组摄入量与 12 个月内进行的四次非连续 24 小时回忆进行比较，评估 FFQ 的相对有效性。一年后重复进行 FFQ 以评估再现性。地点：博茨瓦纳 Kanye。受试者：79 名 18-75 岁的成年人。结果：能量调整营养素有效性的 Spearman 相关系数对于大量营养素的范围为 0.42（碳水化合物）至 0.49（蛋白质），对于微量营养素为 0.23（Fe）至 0.44（PUFA）。 FFQ 和召回之间营养素四分位数分布的精确一致性在 27% 到 72% 之间。视黄醇 (0.13)、铁 (0.22) 和 β-胡萝卜素 (0.25) 的加权 kappa 值最低，其他营养素（能量、碳水化合物、蛋白质、脂肪、钙和维生素 E）的加权 kappa 值范围为 0.33 (SFA) 至 0.59（叶酸）。食品组召回与 FFQ 之间的 Spearman 相关系数范围为 0.18（深绿叶和黄色蔬菜）至 0.58（家禽）。再现性相关系数（能量调整）在视黄醇的 0.39 和维生素 E 的 0.66 之间变化，大多数值落在 0.50 和 0.60 之间。结论：FFQ 对于估计习惯食物组和营养素摄入量具有良好的相对有效性，但对于某些微量营养素（铁、视黄醇和 β-胡萝卜素）和食物（水果和深绿叶蔬菜）的相对有效性较差。
Objective: To evaluate the validity and reproducibility of a 122-item interviewer-administered quantitative FFQ developed to determine food and nutrient intakes of adults in Botswana.Design: Relative validity of the FFQ was evaluated by comparing nutrient and food group intakes against four non-consecutive 24 h recalls administered over 12 months. The FFQ was repeated after 1 year to assess reproducibility.Setting: Kanye, Botswana.Subjects: Seventy-nine adults aged 18-75 years.Results: Spearman correlation coefficients for the validity of energy-adjusted nutrients ranged from 0.42 (carbohydrate) to 0.49 (protein) for macronutrients and from 0.23 (Fe) to 0.44 (PUFA) for micronutrients. Exact agreement of quartile distribution for nutrients between the FFQ and recalls ranged from 27% to 72%. Weighted kappa values were lowest for retinol (0.13), Fe (0.22) and beta-carotene (0.25) and ranged from 0.33 (SFA) to 0.59 (folate) for other nutrients (energy, carbohydrate, protein, fat, Ca and vitamin E). Spearman correlation coefficients between the recalls and FFQ for food groups ranged from 0.18 (dark green leafy and yellow vegetables) to 0.58 (poultry). Reproducibility correlation coefficients (energy-adjusted) varied between 0.39 for retinol and 0.66 for vitamin E, with most values falling between 0.50 and 0.60.Conclusions: The FFQ had good relative validity for estimating habitual food group and nutrient intakes, but was poor for some micronutrients (Fe, retinol and beta-carotene) and foods (fruits and dark green leafy vegetables).