View clinical trials related to Validation Study.
Filter by:A cross-sectional study with repeated measurements among healthy Danish adults to assess the validity and reproducibility of a self-administered 7-day web-based dietary assessment tool, myfood24® tested against objective biomarkers.
The purpose of this study is to evaluate the SpO2 accuracy performance of the Sunrise Sensor 2 placed at the tip of the chin during non-motion conditions over the range of 70-100% by comparison to SaO2 values determined from arterial blood sample specimen analyzed by a CO-oximeter. Testing is conducted under normal office environment conditions. It is expected that the Accuracy Root Mean Square (ARMS) performance of the oximetry system will meet the required specification of ARMS of 3.5% or less allowed for reflectance technology in non-motion conditions for the range of 70-100% SaO2. A secondary goal is to evaluate the pulse rate performance simultaneously collected over the SpO2 range covered.
The aim of this study is to investigate and compare the validity of four different input methods for Landolt Cs, i.e. the proportion of correct gap positions in relation to the total number of performances. The four input methods are a numeric keypad, an eight-positions rocker switch, a remote control and voice feedback.
With, one in three Americans now having a body mass index (BMI) greater than 30, and the fastest growing segment of the population having a BMI greater than 40, it is paramount to conduct validation of approaches to measure body composition. Currently the dual-energy x-ray absorptiometry (iDXA) is the gold standard for measuring the body composition. But it is often difficult to perform since it is limited to specific height, weight and BMI's. InBody is a tool which uses bio electric impedance to measure the body composition. This study will compare both approaches. Validation is necessary as it is clinically quite pertinent to accurately assess a patients' body fat percentage, fat free mass, and total body water and changes that are occurring with nutritional support.
Information about Americans food choices and opinions helps researchers and law makers to develop policies and programs to promote health. For this reason, it is important to be able to collect good quality information about how people think about food. This project will compare different ways of collecting information about food from adults.