Background and Aims. The incidence of atrial or fibrillation (AF) and its complications increase with the constant aging of the population. The main objective was identifying the barriers to opportunistic AF screening (AFs) in the general population ≥60 year-old and related stroke incidence.
Methods. Observational, longitudinal, prospective and multicentric study cohort of 48336 people between 01/01/16-31/12/2017. Adjusted incidence of new AF and stroke, number of screening cases needed to diagnose a new AF. Adjusted multivariate model and ROC curve.
Results. 61.2% had record of AFs. A significant increase in the prevalence of AF was quantified (5.9%vs7.7%, p<0.001). 26.3% of AF was diagnosed by the realization of AFs. The adjusted incidence in AFs group [6.8 CI95% 5.8-7.8] was not different in not AFs group [6.9 IC95% 5.6-8.2]. The number needed for a new AF was 147. The variables associated with the no-performance of the AFs were: age < 70 year-old, urban residence, institutionalized status, Pfeiffer score ≥2 or "cognitive impairment " record , Charlson score ≤3 , and a number of visits lower than the territory average . The ROC curve score was 0.745 (CI95% 0.74-0.7 9, p<0.001). The use of anticoagulant treatment it is significantly higher in the population with AFs (85.3%vs 74.9 %, p<0.001). The incidence ratio of stroke was 1.13 [CI95% 0.398-3.252, p = 0.856].
Conclusions. After two years, the AFs showed neither significant difference in new AF diagnosed nor in the adjusted incidence of stroke. Variables associated to use of health care could influence the results of AFs implementation.
It has a public register: ClinicalTrials.gov Identifier: NCT03589170.