Validity was improved by assessing the quality of trials using the Cochrane risk of bias tables.
And while convergent validity was improved compared with rating scales, the amount of high discriminant correlations was still substantial.
However, by showing the effects of simulator training in settings closely resembling a regional simulator training course the external validity was improved.
First, we did not test the validity or reliability of the questionnaires; however, the questionnaires were modified from the well-tested official ones, revised on the basis of focus group input, and their validity was improved with in-depth interviews and pilot surveys.
The internal validity of trials is improved by the use of strict criteria for patient selection.
Validity of simulated turbulence is improved since the spatial correlation between different wind velocity components are fully accounted.
While inclusion of connectedness, strength, and faith has advantages in terms of content validity, precision of the instrument is improved if they are removed or analyzed as a separate domain.
Finally, while our study results highlight some issues with the validity of disease diagnosis information in the RAI-MDS, they do not suggest how validity may be improved.
Using a quasi-experimental evaluation of a home visiting program to prevent child abuse and neglect that adheres to the Healthy Families America model, this paper describes and illustrates how types of validity can be improved.
Content validity will be improved by the design of a new response format.
