نتایج جستجو برای: validation studies
تعداد نتایج: 1577796 فیلتر نتایج به سال:
Plant macrofossils and pollen play complementary roles in paleoecology. Each has its own advantages and shortcomings. Used separately, they provide valuable information about past vegetation. Used together, the two types of data can corroborate or, occasionally, challenge each other, and they can provide more detailed and refined understanding of past vegetation at multiple spatial scales. In t...
OBJECTIVE The aim of the present study was to assess the concurrent and construct validity of two diet-quality indices, a modified Mediterranean diet score (mMDS) and a Mediterranean-like diet score (MLDS) additionally incorporating unhealthy food choices, as determined by an FFQ. DESIGN A validation study assessing FFQ intake estimates compared with ten or more unannounced 24 h recalls. Pear...
The development of new methods and approaches to dietary assessment has not kept pace with advances in related disciplines. One of the main gaps is the lack of innovation in incorporating cognitive psychology and computer game technology in developing useful, less biased tools for epidemiologic research on diet and disease. Another problem is the general lack of validation studies imbedded with...
The field of neurofeedback training has proceeded largely without validation. In this article the authors review studies directed at validating sensory motor rhythm, beta and alpha-theta protocols for improving attention, memory, and music performance in healthy participants. Importantly, benefits were demonstrable with cognitive and neurophysiologic measures that were predicted on the basis of...
In this study, we explored the use of continuous wave Doppler-echocardiography guided by color Doppler flow-mapping as a method for noninvasively calculating the rate of pressure rise (RPR) in the left ventricle. Continuous wave Doppler determination of the velocities in mitral regurgitant jets allows calculation of instantaneous pressure gradients between the left ventricle and the left atrium...
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