Objective: To evaluate the reliability and validity of a brief physical activity assessment tool suitable for doctors to use to identify inactive patients in the primary care setting. Methods: ...

chw.edu.au Objective—To assess the test-retest reliability and validity of the physical activity questions in the World Health Organisation health behaviour in schoolchildren (WHO HBSC) survey.

What Effect Does Having a Larger Sample Size for Some Vehicles Compared With Others Have on the Validity of the Reliability Data? Given an appropriate sample, the more data you have, the more ...

The National Academies of Sciences, Engineering, and Medicine are the nation's pre-eminent source of high-quality, objective advice on science, engineering, and health matters. Top experts participate ...

For instance, adults ages 50 and older are more likely than younger adults to say they are not very or not at all confident in its reliability and safety (71% vs. 55%). There are also differences ...

ABERDEEN PROVING GROUND, Md. — Ensuring the reliability of military systems is a critical mission for the U.S. Army, and at the forefront of this effort is the U.S. Army Combat Capabilities ...

U.S.A.I.D. President Trump’s order to halt most foreign aid has intensified humanitarian crises and raised questions about the United States’ reliability as a global leader. Delivering U.S ...