The DANBIO clinical register provides highly valid rheumatoid arthritis diagnoses compared to the Danish National Patient Registry, though both have high completeness.
Supports DANBIO for valid RA case identification in Danish studies; leaves generalizability to other registries open.
DANBIO held a high proportion of true RA cases (96%) and was found to be superior to the DNPR (79%) with regard to the validity of the diagnosis. Both registries were estimated to have a high completeness of RA cases treated in hospital care (~90%).
No takes yet. Share an insight, caveat, or question.
Ibfelt et al. (2017) studied this question.