Positive Predictive Value of the Giant Cell Arteritis Diagnosis in the Danish National Patient Registry: A Validation Study.
Peter Engholm HjortPhilip TherkildsenBerit Dalsgaard NielsenIb Tønder HansenMette NørgaardAnnette de ThurahEllen Margrethe HaugePublished in: Clinical epidemiology (2020)
This is the first study to validate the diagnostic code of GCA in the DNPR. The overall PPV of GCA in the DNPR was 62%. Requiring redeemed prescriptions of GCs and/or GCA-related hospital contacts increase the PPV, but also excludes a significant number of GCA patients.