Screening over 100 000 patients in 39 general practices in the Netherlands for anticoagulation underprescription in atrial fibrillation: a descriptive, cross-sectional study.

Objectives: To investigate the underprescription of oral anticoagulation (OAC) in individual atrial fibrillation (AF) patients in primary care.

Setting: Screening of patient records in 39 participating general practitioners (GPs) across the Netherlands.

Participants: We screened 101 207 patient records identifying 2375 non-valvular AF patients.