Sex differences and temporal trends in aortic dissection: a population-based study of incidence, treatment strategies, and outcome in Swedish patients during 15 years.

As large population-based studies of aortic dissection are lacking, the incidence numbers and knowledge about time-trends and sex differences are uncertain. The objective was to describe incidence, temporal trends and outcome of aortic dissection with particular emphasis on sex differences.During the study period 2002-2016, 8057 patients in Sweden were diagnosed with aortic dissection, identified from the National Patient Register and the Cause of Death Register. A total of 5757 (71%) patients were hospitalized, whereas 2300 (29%) patients were deceased without concurrent hospital stay. The annual incidence was 7.2 per 100 000 (9.1 in men and 5.4 in women), decreasing over time in men (P = 0.005). Mean age in the hospitalized patients was 68 years (SD 13), 2080 (36%) were women. Within the first 14 days after onset, 1807 patients (32%) underwent surgical repair. The proportion of surgically treated increased from the 5-year period 2002-2006 to 2012-2016 [27% vs. 35%, odds ratio (OR) 1.61, 95% confidence interval (CI) 1.39-1.86; P 

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