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Thus, these equations are highly dependent on the test data used, which may limit their validity in different situations.
However, since the Darcy's law neglects inertial effect, its validity in different designs and operating conditions needs to be carefully studied.
Nevertheless, further studies are needed to demonstrate its validity in different clinical situations as it has been extensively demonstrated with the original tool.
Further studies are required to ascertain the validity in different diagnostic groups.
It has shown a high content and construct validity in different linguistic adaptations.
It showed acceptable reliability and validity in different applications [ 12, 28, 29].
Similar(42)
However, further optimization is required, testing its reliability and validity in several different patient groups, leading to an international multidisciplinary protocol with the active involvement of health care providers.
We re-estimated Cronbach's coefficient alpha and construct validity in three different subgroup dichotomizations, ie, white versus nonwhite patients, white versus nonwhite caregivers, and caregivers with less than 12 years of education versus higher education.
The questionnaire items and the format were pilot tested for clarity and face validity in two different settings, including primary care physician participants in a health services research seminar at UC Davis and a web based questionnaire e-mailed to primary care colleagues in academic settings.
These issues illustrate the importance of examining the psychometric validity of instruments in different ethnic groups with cultural differences in language, values and perceptions of health.
In a group of community-dwelling older adults aged 66 to 97 years [ 47], researchers found evidence for test-retest reliability, criterion validity (comparing the chair stand performance to a measure of lower body strength), and discriminant validity (comparing performance in different age and physical activity groups) with the 30-second sit-to-stand test.
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