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Psychometric and Statistical Consulting

Consulting services to give you confidence in making the best decisions from the best data. From scale evaluation and selection to scale development using the latest psychometric methods to clinical trial analyses, VPG offers a wide range of expert consulting services.

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Adaptest® Web-based ePRO

Web-based ePRO backed by a foundation of psychometric expertise.  The way ePRO will eventually be done is what we’ve been doing for years.  B.Y.O.D. is already part of Adaptest®!

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flexMIRT® IRT Software

Multilevel and multiple group item response theory (IRT) software package for item analysis and test scoring. flexMIRT® fits a variety of unidimensional and multidimensional item response theory models to single-level and multilevel data in any number of groups.

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The only eCOA provider led by experts in psychometrics

It's not just about collecting data. Asking the right questions at the right time and using an appropriate assessment strategy can mean the difference between approval or denial, success or failure.