1046. Hospital-level Variability in Mortality during Hospitalizations with ICD-9 Codes for Severe Sepsis/Septic Shock, United States, 2013.
Session: Poster Abstract Session: Clinical Infectious Diseases: Bacteremia and Endocarditis
Friday, October 28, 2016
Room: Poster Hall
  • Hospital Variability Sepsis IDWk Poster FINAL.pdf (567.4 kB)
  • Background:  Sepsis remains a leading cause of mortality. Efforts to improve sepsis outcomes focus on early recognition and treatment. However, outcomes may also depend on patient and hospital characteristics.  Our goal was to describe hospital-level variability in sepsis mortality and explore if this variability can be explained by common hospital characteristics.

    Methods: Administrative claims data from Centers for Medicare and Medicaid Services (CMS) fee for service beneficiaries discharged from US hospitals in 2013 were used to retrospectively identify the incidence of death among discharges with ICD-9 codes for severe sepsis (995.92) or septic shock (785.52) by hospital. Hospital characteristics were obtained from the CMS Healthcare Cost Report Information System. We created a multivariable model to explain the variability in the incidence of death using hospital-level characteristics: teaching status, bed size, urban vs. rural location, volume of Medicare patients, case-mix index, annual number of sepsis discharges, average patient age, average patient co-morbidity score, and percent of sepsis hospitalizations discharged to hospice.

    Results:  Of 3054 acute care hospitals, 2340 (77%) had > 10 discharges with a code for severe sepsis/septic shock in 2013. Among these hospitals, the median number of discharges with codes for severe sepsis/septic shock was 77 (IQR: 35-147); the median incidence of death was 28 per 100 sepsis discharges (IQR: 21.6-35.1, Figure 1).  Hospital-level characteristics explained 14.7% of the variability in the incidence of death; the majority explained by two variables: the percent of sepsis hospitalizations discharged to hospice (7.1%) and the annual number of sepsis discharges (3.4%).

    Conclusion:  There is significant hospital-level variability in the incidence of death among hospitalized Medicare patients coded with severe sepsis/septic shock. This variability is not explained by hospital-level characteristics such as bed size, teaching status, volume, geographic location, and case-mix index.   Better understanding of hospital characteristics associated with variability in sepsis mortality may inform surveillance for sepsis and associated mortality, and potentially identify targets for intervention. 

    Kelly Mccormick, MSPH, James Baggs, PhD, Raymund Dantes, MD, MPH, Anthony Fiore, MD, FIDSA, John Jernigan, MD, MS, Shelley S. Magill, MD, PhD and Lauren Epstein, MD, MSc, Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention, Atlanta, GA


    K. Mccormick, None

    J. Baggs, None

    R. Dantes, None

    A. Fiore, None

    J. Jernigan, None

    S. S. Magill, None

    L. Epstein, None

    Findings in the abstracts are embargoed until 12:01 a.m. CDT, Wednesday Oct. 26th with the exception of research findings presented at the IDWeek press conferences.