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Ed visits lane disease definition8/28/2023 ![]() Rates of ILI-related ED visits were higher for populations aged Between August 2016 and July 2018, there were 3,346 ILI-related ED visits per 100,000 population, of which 22 percent resulted in inpatient admission.On average from August 2016 to July 2018, nearly 8 percent of emergency department (ED) visits had any-listed influenza or influenza-like illness (ILI) diagnosis, with peaks in February 2017 (13 percent) and January 2018 (16 percent).These statistics are also provided for the 18 flu seasons combined. Monthly trends in influenza and influenza-like illness (ILI)-related emergency department (ED) visits, 18 flu seasonsįigure 1 presents monthly percentages of total ED visits with any-listed ILI diagnosis or a first-listed ILI diagnosis. Thus, only differences greater than or equal to 10 percent are discussed in the text. Because of the large sample size of the SID and SEDD data, small differences can be statistically significant. Race/ethnicity statistics are presented for a subset of 27 States with reliable data on race/ethnicity. Finally, State variation in the population rate of ILI-related ED visits is shown overall and by age, race/ethnicity, and location of residence. Second, the three metrics are examined across patient and community characteristics. 3 First, monthly trends in ED visits involving ILI are shown. Three measures characterize ILI-related ED utilization: the population rate of ED visits involving ILI, the percentage of ILI-related ED visits resulting in inpatient admission, and the percentage of total ED visits involving ILI-a measure of the transmissibility and clinical severity of an influenza epidemic. The HCUP State Inpatient Databases (SID) were used to identify ED visits resulting in inpatient admission, and the State Emergency Department Databases (SEDD) were used to identify treat-and-release ED visits from 34 States and the District of Columbia. This Healthcare Cost and Utilization Project (HCUP) Statistical Brief presents statistics on ILI-related ED visits from 2016 through 2018. Understanding patterns in hospital utilization for influenza and influenza-like illnesses, both hereafter referred to as ILI, is important to ensure hospitals have adequate capacity to respond to emerging influenza-related public health threats. 1,2 These statistics may be underestimates because they do not include influenza-like illnesses, such as bronchitis and viral pneumonia, which have clinically important flu-like signs and symptoms. In recent peak seasons characterized by more severe viral strains, such as 2014-2015, there were 851,000 emergency department (ED) visits, 223,000 hospitalizations, and 51,000 deaths. Fingar, Ph.D., M.P.H.Įach year in the United States, influenza infections result in substantial hospital use and mortality.
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