Lutein and zeaxanthin dietary screeners validation study in healthy Australian and United Kingdom adults

Dataset contains demographic and dietary lutein and zeaxanthin intake data of healthy Australian and United Kingdom adults. Demographic data includes participant age, sex, physical activity levels, height, weight, and country of residence. Dietary lutein and zeaxanthin intake data was collected via 24-hour diet recalls, a monthly screeners, and weekly screeners. Participants completed up to eight 24-hour diet recalls, two monthly screeners, and four weekly screeners via online survey platforms. Intake of lutein and zeaxanthin from the dietary intake tools was estimated using the United States Department of Agriculture food composition tables. To determine the validity of the monthly and weekly screeners, daily dietary lutein and zeaxanthin intake from these tools were compared against intake from the 24-hour diet recalls using a Bland-Altman plot analysis.

本数据集包含澳大利亚与英国健康成人的人口统计学信息，以及膳食叶黄素（lutein）和玉米黄质（zeaxanthin）摄入数据。其中人口统计学数据涵盖受试者年龄、性别、身体活动水平、身高、体重及居住国家。膳食叶黄素与玉米黄质的摄入数据通过三种途径采集：24小时膳食回顾法（24-hour diet recalls）、月度膳食筛查问卷（monthly screeners）以及周度膳食筛查问卷（weekly screeners）。受试者通过在线调查平台（online survey platforms）完成至多8次24小时膳食回顾、2次月度膳食筛查问卷与4次周度膳食筛查问卷。研究人员借助美国农业部（United States Department of Agriculture）食品成分表，对上述膳食摄入工具所获取的叶黄素与玉米黄质摄入量进行估算。为验证月度及周度膳食筛查问卷的有效性，研究人员采用布兰德-奥特曼图分析法（Bland-Altman plot analysis），将通过这两类筛查问卷得到的每日膳食叶黄素与玉米黄质摄入量，与24小时膳食回顾法所得的摄入量开展对比分析。