As records can differ in validity [ 13] this might explain some of the variability, particularly in those studies [ 47, 52, 58] which used medical reports as a primary data source.
A comparison of two or more assemblies may reveal similar levels of coverage, but differing levels of validity, multiplicity, and parsimony.
Although the relative contributions of structural and psychosocial variables are intensely debated, the validity of differing hypotheses has proven difficult to test because the incidence of serious disabling LBP illness is low in healthy subjects.
Many CVD drug studies have utilized CIMT as a clinical endpoint, although there are differing opinions on the validity of CIMT as a surrogate marker for outcome studies [ 28, 29].
However, little is known about which commonly used instruments produce the highest rates of predictive validity, and whether overall rates of predictive validity differ by gender, ethnicity, outcome, and other study characteristics.
Subsequently, three-judge district courts differed over the validity of a requirement that voters be registered for 50 days prior to election.
The conference participants, who included students, academics and university administrators from Europe, South America, Africa and the United States, also differed about the validity of university rankings.
Thus, it was possible that the test also differed in its validity of measuring the depth knowledge for Chinese and Korean learners.
This stratification was done to examine whether the validity differed over time and included a chi-square test for linear trend.
