[Approximation analysis in the study of the epidemiology of the epistaxis].

2003 to 2019 the total number of patients treated in ENT hospitals was 563 189 people, 20 623 (3.7%) patients were treated with NB, of which 52 (0.25%) died. The average age of the deceased was 64.7 years, men are 73.7% more prevalent than women. In 96.2% of patients, epistaxis was a complication of the underlying disease, and in 3.8%, it was regarded as a concomitant condition. In 30.8% of the deceased, NB recurred with the background of malignant lesions of the nose and nasopharynx, in 69.2% - posthemorrhagic anemia aggravated diseases of other organs and systems. Over the past 17 years, there has been a tendency for the growth of treated patients with diseases of ENT organs and patients with nosebleeds by 58.5% and 51.1%, respectively. The studied approximation of the relative prevalence and mortality rates in patients with NB showed that for the period from 2003 to 2019. trend values are practically at the same level with the minimum multidirectional linear dynamics - -0.24% and +0.04%, respectively.