Thank you for your interest in measurement of self-reported medication nonadherence. The two-part scale developed by Dr. Voils was created with funding from the National Institute on Aging with the intention that it be freely available. If you use the scale, we would appreciate you sharing your results and any published paper(s) with us so that we can share performance characteristics with other users.
This guide explains how the measure has been refined since its original publication, scoring instructions, and other helpful information. If you obtain information on reliability and validity of the measure in a new population, please email Dr. Voils to let her know about it! We will compile information from various users and use the information to further validate the scale over time.
Click here to view the guide.
Versions of scale
Version 1: From Medical Care 2012 article. Validated in patients being treated for hypertension.
Version 2: From Pt Pref Adhere 2014 article. Same as Medical Care 2012 except response scale for extent of nonadherence items ranged from never to always.
This is the most current version, which we recommend:
Version 3: Modified for Hepatitis C based on focus groups and cognitive interviews. This version is undergoing validation. For more, see user’s guide.
Voils J Clin Epidemiol 2011”
“Voils Med Care 2012”
“Voils Patient Prefer Adherence 2014”
“Weidenbacher Patient Prefer Adherence 2015”