Abstract:
OBJECTIVE:Danish medical registries are widely used for cardiovascular research, but little is known about the data quality of cardiac interventions. We computed positive predictive values (PPVs) of codes for cardiac examinations, procedures and surgeries registered in the Danish National Patient Registry during 2010-2012. DESIGN:Population-based validation study. SETTING:We randomly sampled patients from 1 university hospital and 2 regional hospitals in the Central Denmark Region. PARTICIPANTS:1239 patients undergoing different cardiac interventions. MAIN OUTCOME MEASURE:PPVs with medical record review as reference standard. RESULTS:A total of 1233 medical records (99% of the total sample) were available for review. PPVs ranged from 83% to 100%. For examinations, the PPV was overall 98%, reflecting PPVs of 97% for echocardiography, 97% for right heart catheterisation and 100% for coronary angiogram. For procedures, the PPV was 98% overall, with PPVs of 98% for thrombolysis, 92% for cardioversion, 100% for radiofrequency ablation, 98% for percutaneous coronary intervention, and 100% for both cardiac pacemakers and implantable cardiac defibrillators. For cardiac surgery, the overall PPVs was 99%, encompassing PPVs of 100% for mitral valve surgery, 99% for aortic valve surgery, 98% for coronary artery bypass graft surgery, and 100% for heart transplantation. The accuracy of coding was consistent within age, sex, and calendar year categories, and the agreement between independent reviewers was high (99%). CONCLUSIONS:Cardiac examinations, procedures and surgeries have high PPVs in the Danish National Patient Registry.
journal_name
BMJ Openjournal_title
BMJ openauthors
Adelborg K,Sundbøll J,Munch T,Frøslev T,Sørensen HT,Bøtker HE,Schmidt Mdoi
10.1136/bmjopen-2016-012817subject
Has Abstractpub_date
2016-12-09 00:00:00pages
e012817issue
12issn
2044-6055pii
bmjopen-2016-012817journal_volume
6pub_type
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