2015 Healthcare Use Data

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Abbreviations: MSA, Metropolitan Statistical Area; SE, standard error.
Note: Due to the transition from ICD-9-CM to ICD-10-CM in October 2015, an asthma emergency department visit (ED) was defined as an ED visit with asthma as the primary diagnosis using an ICD-9-CM diagnosis code of 493 for quarters 1-3 and ICD-10-CM diagnosis code of J45 for quarter 4.
^*Crude rate per 10,000 and SE, standard error.
^†Rate of child ED visits was calculated using the weighted number of visits for children aged 0–17 years and dividing it by the resident population for children aged 0–17 years per 10,000.
^§Rate of adult ED visits calculated using the weighted number of visits for adults aged 18+ years divided by the resident population for adults aged 18+ years per 10,000.
^¶Sex of patient categories include male and female as in the medical record.
^**Data on race and ethnicity was not available in the database.
^††Based on actual location of the hospital.
^§§Based on location of patient’s residence.
^¶¶Rate of MSA ED visits was calculated by combining the weighted number of visits for large central metro, large fringe metro (suburbs), and medium and small metro categories and dividing it by the resident population for MSA per 10,000.
^***Rate of Non-MSA ED visits was calculated using the weighted number of visits for the micropolitan and noncore (rural) category and dividing it by the resident population for non-MSA per 10,000.

SOURCE: HCUP, Healthcare Cost and Utilization Project, National (Nationwide) Emergency Department Sample (NEDS). Agency for Healthcare Research and Quality, Rockville, MD. For more information about HCUP data see https://www.hcup-us.ahrq.gov/db/nation/neds/nedsdbdocumentation.jsp.

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