Review of response rates over time in registry-based studies using patient-reported outcome measures.
Katherine WangCathrine N EftangRune Bruhn JakobsenAsbjørn ÅrøenPublished in: BMJ open (2020)
The large variation and downward trend of RRs to PROMs in cohort and registry-based studies are of concern and should be assessed and addressed when using registry data in both research and clinical practice.