13 different healthcare systems were obtained utilizing a HIPAA-compliant, pa- tient de-identified web application (Explore). Out of the 16,941,140 study pop-.
Atrial fibrillation
Methods: 2046 consecutive patients hospitalized at our Institution for ACS (896 STE-ACS and 1150 NSTE-ACS) between 2004-2006 were followed up for 5 years after discharge. The whole population was divided into two groups according to the presence of AF during index hospitalization. Clinical outcomes were divided into the acute phase (0– 30 days) and the chronic phase (landmark analysis at 30 days-1 year and 1 year - 5 years). AF was identified during the hospital stay, regardless of its time of onset. The relationship between AF and clinical outcomes was evaluated by multivariable Cox regression analysis. Results: Overall, AF during hospitalization occurred in 190 patients (9.3%): 4.9% STE-ACS and 12.7% NSTE-ACS (p
