The US Food and Drug Administration FDA PRO Guidancece document [11] states that PRO measures should be conceptually valid as they relate to the medical intervention and disease state being studied, meet a threshold of psychometric soundness, and be relevant to patients.
This paper contributes a new method of classifying occupations, which is conceptually valid, based as it is on direct evidence of skill use in jobs, and which is therefore responsive to changes in job skills within jobs.
It's intriguing stuff if you believe light and dark have values that are diametrically opposed and in need of fusion, or that a similar dichotomy is conceptually valid.
In conclusion, the study indicated that the ChQOL is conceptually valid with satisfactory psychometric properties.
As indicated in the Background, the combination of the two tests is conceptually valid since they are theoretically measuring different aspects of Rest's four-component model.
It is important that the questionnaire is conceptually valid across different languages to be able to use it in different countries.
There is, of course, still hope that this will occur, as the basic premise under which BBDR modeling was pursued for risk estimation is conceptually valid.
The inclusion of selected interaction terms in design plans should be encouraged, based on those that are most likely to be conceptually valid.> -wrap-foot> SPEED = Stated Preference Experiment Editor and Designer.
Fenn's approach was conceptually quite simple.
For example, aggregating the "Some" and "Most" groups is not conceptually valid because we would be looking at a difference between those who attend 1% and those who attend 99% of visits.
Considering (1) that their extreme positions in the hierarchies are, nevertheless, conceptually valid and (2) that their exclusion substantially decreased the PSEP of the scales (even when combined in a single index), these misfitting items were finally retained.
