iDATA/MEASURE

MEASURE是一项研究，包括来自三个队列子研究的统一汇总数据。目的是评估饮食和体力活动评估仪器的测量误差特性。三项研究的常见数据元素包括食物频率调查问卷、饮食记录、24小时饮食回忆、加速度计、人体测量、人口统计学静息代谢率、身体活动调查问卷、24小时身体活动回忆，以及来自双标签水和24小时尿液、唾液和空腹血的生物测量。根据一项单独的合同，这些数据将与数据字典进行协调和充分记录。支持将包括分析文件的创建、变量的创建、数据链接和统计分析。分析可能包括建模校准/验证和其他统计分析，以评估饮食和身体活动评估方法的误差。验证和结果研究可能需要复杂的统计分析。

MEASURE is a study that includes harmonized, pooled data from three cohort sub studies. The purpose is to assess the measurement error properties of diet and physical activity assessment instruments. Common data elements across the three studies include food frequency questionnaires, diet records, 24-hour dietary recalls, accelerometers, anthropometry, demographics resting metabolic rate, physical activity questionnaires, physical activity 24-hour recalls, and biological measures from doubly labeled water and24-hour urine, saliva and fasting bloods. Under a separate contract these data will be harmonized and well-documented with data dictionaries. Support will include the creation of analytic files, variable creation, data linkage and statistical analyses. Analyses may include modeling for calibration/validation and other statistical analyses to assess error in dietary and physical activity assessment methods. Sophisticated statistical analyses for validation and outcome studies may be required.