“Weekend Effect” or “Saturday Effect”?
An Analysis of Hospital Mortality for Patients With Ischemic Stroke in South Carolina
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Most studies about the mortality difference between weekend and weekday admissions for acute stroke have used a weekend-versus-weekday dichotomy rather than exploring patterns of specific admit days.1 Studies assessing this “weekend effect” categorize discharges to hospice care without distinction from other survivors, a questionable classification given the definition of hospice. We explored differences in hospital outcomes for acute stroke admissions by each day in the week.
We used the 2012 to 2013 State Inpatient Hospital Discharge Database (http://rfa.sc.gov/healthcare/dataoversight/restricted) for all acute ischemic stroke hospital admissions in South Carolina. This study was approved by the Clemson University Institutional Review Board. Patients discharged with a primary diagnosis of ischemic stroke were identified based on the following International Classification of Diseases-9-CM codes: 433.x1, 434.91, 434.11, 434.01, and 436.01.2 The primary outcome was hospital mortality, labeled as “expired” for the discharge status. Among patients with nonfatal discharges, we performed further analyses of whether …