Yu Angela D, Mumme Karen D, Conlon Cathryn A, von Hurst Pamela R, Gillies Nicola, Heath Anne-Louise, Coad Jane, Beck Kathryn L
College of Health, Massey University, Auckland 0632, New Zealand.
The Liggins Institute, University of Auckland, Auckland 1023, New Zealand.
Nutrients. 2022 Jan 25;14(3):519. doi: 10.3390/nu14030519.
Dietary intake is an important predictor of health and disease outcomes. This cross-sectional study evaluated the relative validity and reproducibility of a semi-quantitative food frequency questionnaire (FFQ) for assessing energy and nutrient intake in older adults. Dietary data were collected 2018-2019 in Auckland, New Zealand from a convenience sample of community-dwelling adults (65-74 years, = 294, 37% male) using a 109-item self-administered FFQ at baseline (FFQ1) and four weeks later to assess reproducibility. FFQ1 was compared to a four-day food record to determine relative validity. Agreement between dietary assessment tools was assessed for both raw and energy-adjusted nutrient intakes using paired -tests, correlation coefficients, weighted kappa statistic, Bland-Altman plots, and linear regression analysis. Energy adjustments moderately improved the relative validity and reproducibility for most nutrients. For energy and energy-adjusted nutrient intakes, the mean correlation coefficients were 0.38 (validity) and 0.65 (reproducibility); the mean weighted kappa statistics were 0.27 (validity) and 0.51 (reproducibility). A significant slope of bias was present in 54% (validity) and 25% (reproducibility) of Bland-Altman plots. The Researching Eating, Activity, and Cognitive Health (REACH) FFQ has acceptable relative validity and good reproducibility for ranking nutrient intakes in older New Zealand adults, but is less suitable for assessing absolute nutrient intakes.
饮食摄入量是健康和疾病结果的重要预测指标。这项横断面研究评估了一种半定量食物频率问卷（FFQ）在评估老年人能量和营养摄入量方面的相对有效性和可重复性。2018年至2019年在新西兰奥克兰，从社区居住成年人（65 - 74岁，n = 294，男性占37%）的便利样本中收集饮食数据，在基线时使用109项自填式FFQ（FFQ1），四周后再次使用以评估可重复性。将FFQ1与四天食物记录进行比较以确定相对有效性。使用配对t检验、相关系数、加权kappa统计量、Bland - Altman图和线性回归分析，对原始和能量调整后的营养摄入量评估饮食评估工具之间的一致性。能量调整适度提高了大多数营养素的相对有效性和可重复性。对于能量和能量调整后的营养摄入量，平均相关系数分别为0.38（有效性）和0.65（可重复性）；平均加权kappa统计量分别为0.27（有效性）和0.51（可重复性）。在Bland - Altman图中，54%（有效性）和25%（可重复性）存在显著的偏差斜率。研究饮食、活动和认知健康（REACH）FFQ在对新西兰老年成年人的营养摄入量进行排名方面具有可接受的相对有效性和良好的可重复性，但不太适合评估绝对营养摄入量。
