Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, 4169-005Porto, Portugal.
Faculty of Agriculture, Department of Food Science, Nutrition and Technology, University of Nairobi, 00625Nairobi, Kenya.
Public Health Nutr. 2021 Apr;24(5):834-844. doi: 10.1017/S136898002000169X. Epub 2020 Jul 24.
To develop a semi-quantitative FFQ and to evaluate its validity and reproducibility for the assessment of total dietary intake of Kenyan urban adult population, given its non-existence in Kenya.
The current study adopted a cross-sectional design. A culture-sensitive semi-quantitative FFQ was developed and its validity was tested relative to three non-consecutive 24-h recalls (24hR). Reproducibility was tested by the test-retest method, with a 3-week interval. Spearman's correlation coefficients and intra-class correlation coefficients were calculated for several macro- and micronutrients. Cross-classification into quartiles and Bland and Altman plots were analysed.
Nairobi county (Dagoreti South and Starehe constituencies).
A convenient sample was recruited in three different clusters in Nairobi.
A culture-sensitive 123-food-item semi-quantitative FFQ showed higher nutrient intakes compared with the 24hR (total energy median 12543·632 v. 8501·888 kJ, P < 0·001). Energy-adjusted and deattenuated Spearman's correlations for macronutrients ranged between 0·21 (total fat) and 0·47 (protein). The agreement in the same quartile varied from 28 % (protein) to 41 % (carbohydrates). Including adjacent quartiles, the range increased: 76 % (protein and fat) to 81 % (carbohydrates). The extreme disagreement was low. The first FFQ application resulted in higher mean values for all nutrients compared with the second FFQ (total energy median 12459·952 v. 10485·104 kJ, P < 0·001). Energy-adjusted correlations for macronutrients ranged from 0·28 (carbohydrates) to 0·61 (protein). Intra-class correlation coefficients for macronutrients were moderate, between 0·6 and 0·7.
The developed semi-quantitative FFQ was shown to be a valid and reproducible tool for ranking urban adult Kenyans according to their dietary intake.
由于肯尼亚缺乏半定量食物频率问卷（FFQ），本研究旨在开发一种适用于肯尼亚城市成年人群的半定量 FFQ，并评估其评估总膳食摄入量的有效性和可重复性。
本研究采用横断面设计。开发了一种具有文化敏感性的半定量 FFQ，并通过与三个非连续 24 小时回忆（24hR）相对比来检验其有效性。通过 3 周间隔的测试-重测法检验可重复性。计算了几种宏量和微量营养素的 Spearman 相关系数和组内相关系数。对四分位数进行交叉分类，并进行 Bland 和 Altman 图分析。
内罗毕县（Dagoreti South 和 Starehe 选区）。
在内罗毕的三个不同集群中招募了一个方便的样本。
一种具有文化敏感性的包含 123 种食物的半定量 FFQ 显示，与 24hR 相比，其营养素摄入量更高（总能量中位数为 12543.632 比 8501.888 kJ，P<0.001）。调整能量和去衰减后的宏观营养素的 Spearman 相关性在 0.21（总脂肪）和 0.47（蛋白质）之间。同一四分位数的一致性从 28%（蛋白质）到 41%（碳水化合物）不等。包括相邻四分位数时，范围增加到 76%（蛋白质和脂肪）至 81%（碳水化合物）。极端不一致的情况很少。第一个 FFQ 应用的所有营养素的平均值均高于第二个 FFQ（总能量中位数为 12459.952 比 10485.104 kJ，P<0.001）。调整能量后的宏观营养素相关性从 0.28（碳水化合物）到 0.61（蛋白质）不等。宏观营养素的组内相关系数为 0.6 到 0.7，属于中度相关。
所开发的半定量 FFQ 可有效用于根据肯尼亚城市成年人的饮食摄入量对其进行排名，且具有良好的可重复性。
