• Tarik Hanane, Samuel Wiles, Mourad H Senussi, Xiaozhen Han, Xiao-Feng Wang, R Duncan Hite, and Jorge A Guzman.
• Department of Critical Care, Respiratory Institute, Cleveland Clinic, Cleveland, OH 44195, USA. Electronic address: hananet@ccf.org.
• J Crit Care. 2017 Jun 1; 39: 1-5.

ObjectiveTo determine if the length of stay at a referring institution intensive care unit (ICU) before transfer to a tertiary/quaternary care facility is a risk factor for mortality.DesignWe performed a retrospective chart review of patients transferred to our ICU from referring institution ICUs over a 3-year period. Logistical regression analysis was performed to determine which factors were independently associated with increased mortality. The primary outcomes were ICU and hospital mortality.Main ResultsA total of 1248 patients were included in our study. Length of stay at the referring institution was an independent risk factor for both ICU and hospital mortality (P<.0001), with increasing lengths of stay correlating with increased mortality. Each additional day at the referring institution was associated with a 1.04 increase in likelihood of ICU mortality (95% confidence interval, 1.02-1.06; P =0.001) and a 1.029 (95% confidence interval, 1.01-1.05; P .005) increase in likelihood of hospital mortality.ConclusionsLength of stay at the referring institution before transfer is a risk factor for worse outcomes, with longer stays associated with increased likelihood of mortality. Further studies delineating which factors most affect length of stay at referring institutions, though a difficult task, should be pursued.Copyright © 2016 Elsevier Inc. All rights reserved.

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