LAUSR

Purpose: To assess how homelessness impacts mortality and length of stay (LOS) among select the intensive care unit (ICU) patients. Methods: We used ICD‐9 code V60.0 to identify homeless patients using the Premier Perspective Database from January 2010 to June 2011. We identified three subpopulations who received critical care services using ICD‐9 and Medicare Severity Diagnosis Related Groups (MS‐DRG) codes: patients with a diagnosis of sepsis who were treated with antibiotics by Day 2, patients with an alcohol or drug related MS‐DRG, and patients with a diabetes related MS‐DRG. We used multivariable logistic regression to predict mortality and multivariable generalized estimating equations to predict hospital and ICU LOS. Results: 781,540 hospitalizations met inclusion criteria; 2278 (0.3%) were homeless. We found homelessness had no significant adjusted association with mortality among sepsis patients, but was associated with substantially longer hospital LOS: (3.7 days longer; 95% CI (1.7, 5.7, p < .001). LOS did not differ in the Diabetes or Alcohol and Drug related DRG groups. Conclusions: Critically ill homeless patients with sepsis had longer hospital LOS but similar ICU LOS and mortality risk compared to non‐homeless patients. Homelessness was not associated with increased LOS in the diabetes or alcohol and drug related groups.