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  • Title: Construction and Validation of Risk-adjusted Rates of Emergency Department Visits for Long-stay Nursing Home Residents.
    Author: Xu H, Bowblis JR, Li Y, Caprio TV, Intrator O.
    Journal: Med Care; 2020 Feb; 58(2):174-182. PubMed ID: 31764481.
    Abstract:
    BACKGROUND: Long-stay nursing home (NH) residents are at high risk of having emergency department (ED) visits, but current knowledge regarding risk-adjusted ED rates is limited. OBJECTIVES: To construct and validate 3 quarterly risk-adjusted rates of long-stay residents' ED use: any ED visit, ED visits without hospitalization or observation stay (outpatient ED), and potentially avoidable ED visits (PAED). RESEARCH DESIGN: The authors calculated quarterly NH risk-adjusted ED rates from 2011 Q2 to 2013 Q3 national Medicare claims and Minimum Data Set data. Using random-effect linear regressions, the authors validated these rates against Nursing Home Compare overall 5-star quality ratings and examined their associations with hospitalization rates to provide a quality context. SUBJECTS: Resident-quarter observations (7.3 million) from 15,235 unique NHs. RESULTS: Risk-adjusted rates of any ED, outpatient ED, and PAED averaged 9.7%, 3.4%, and 3.2%, respectively. Compared with NHs with 1 or 2 stars overall rating, NHs with ≥3 stars were significantly associated with lower rates of any ED visit, outpatient ED, and PAED (β, -0.23%, -0.16%, and -0.11%, respectively; all P<0.01). Pearson Correlation coefficients between hospitalization rates and rates of any ED visit, outpatient ED, and PAED were 0.74, 0.31, and 0.46, respectively. CONCLUSIONS: The moderately negative associations of 5-star ratings with ED rates provide supportive evidence to their validity. Outpatient ED and PAED were moderately correlated to hospitalizations suggesting they provided more information about quality than any ED.
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