The validation of the dairy intake in higher income South African adults

Paper-based dietary assessment tools such as food frequency questionnaires (FFQs) and especially dietary screeners are making way for versions that use technology. Amidst low intakes of dairy and dairy-related nutrients in South Africa and to increase public awareness thereof, this research aimed to develop and evaluate the usability of an application (app), namely the Dairy Diary, to screen for dairy intake in higher income South African adults (Phase 1) Thereafter, the screener was evaluated in terms of test-retest reliability and comparative validity (Phase 2)In a diagnostic accuracy study, undergraduate dietetics/nutrition student volunteers from three South African universities completed three non-consecutive days of weighed food records (reference standard) within a seven-day period (comparative validity), followed by two administrations, two weeks apart, of the screener (index test) (reliability). The food records (phase 2) submitted by the student participants are attached.The Code Book for phase 1 and phase 2 of the study are attached.The Data Set for phase 1 and phase 2 of the study are attached.

基于纸张的饮食评估工具，如食物频率问卷（FFQs）以及尤其是饮食筛查工具，正逐渐被技术应用版本所取代。鉴于南非地区乳制品及其相关营养素的摄入量偏低，以及提高公众对此的认识，本研究旨在开发并评估一款名为“乳品日记”的应用程序（app）的易用性，以筛查南非高收入成年人的乳制品摄入情况（第一阶段）。随后，该筛查工具在测试-重测可靠性和比较效度方面进行了评估（第二阶段）。在一项诊断准确性研究中，来自南非三所大学的本科生营养学/营养专业志愿者在七天的周期内完成了三个非连续日的称重食物记录（参考标准），随后在两周内分别进行了两次筛查工具的测试（指标测试）（可靠性）。学生参与者提交的食物记录（第二阶段）已附上。本研究第一阶段和第二阶段的研究编码手册已附上。第一阶段和第二阶段的研究数据集也已附上。