Context: Patients' recruitment is difficult in clinical trials. Financial incentives are frequently proposed to clinicians in private funded trials. However, the effect of these financial incentives has never been evaluated.~Objective: to evaluate the effect of financial incentive on the rate of recruitment of patients in a cohort study.~Design: randomized controlled trial Setting: primary care Participants: physicians (GP and cardiologists) participating in the recruitment of patients in a cohort study (the COFRASA study). The COFRASA cohort study is including aortic stenosis aging patient.~Intervention:75 euros for each patient included Main outcome: percentage of physician including at least one patient at 3 months Secondary outcome: mean number of patients included at 6 months. Sample size 270 physicians
Patients' recruitment is difficult in clinical trial. Financial incentives are frequently proposed to clinicians in private funded trials. However, the effect of these financial incentives has never been evaluated.~The purpose of this study is to evaluate the effect of financial incentive on the rate of recruitment of patients in a cohort study.