title: Differences in emergency colorectal surgery in Medicaid and uninsured patients by hospital safety net status.
abstract: OBJECTIVE
  We examined whether safety net hospitals reduce the likelihood of emergency colorectal cancer (CRC) surgery in uninsured and Medicaid-insured patients. If these patients have better access to care through safety net providers, they should be less likely to undergo emergency resection relative to similar patients at non- safety net hospitals.
  
  
  METHODS
  Using population-based data, we estimated the relationship between safety net hospitals, patient insurance status, and emergency CRC surgery. We extracted inpatient admission data from the Virginia Health Information discharge database and matched them to the Virginia Cancer Registry for patients aged 21 to 64 years who underwent a CRC resection between January 1, 1999, and December 31, 2005 (n = 5488).
  
  
  METHODS
  We differentiated between medically defined emergencies and those that originated in the emergency department (ED). For each definition of emergency surgery, we estimated the linear probability models of the effects of being treated at a safety net hospital on the probability of having an emergency resection.
  
  
  RESULTS
  Safety net hospitals reduce emergency surgeries among uninsured and Medicaid CRC patients. When defining an emergency resection as those that involved an ED visit, these patients were 15 to 20 percentage points less likely to have an emergency resection when treated in a safety net hospital.
  
  
  CONCLUSIONS
  Our results suggest that these hospitals provide a benefit, most likely through the access they afford to timely and appropriate care, to uninsured and Medicaid-insured patients relative to hospitals without a safety net mission.
authors.affiliation: Virginia Commonwealth University, Department of Healthcare Policy and Research and Massey Cancer Center, PO Box 980430, Richmond, VA 23298-0430. Email: cjbradley@vcu.edu.
authors.forename: Cathy J
authors.initials: CJ
authors.lastname: Bradley
authors.forename: Bassam
authors.initials: B
authors.lastname: Dahman
authors.forename: Lindsay M
authors.initials: LM
authors.lastname: Sabik
mesh_terms: D000368:Aged; D015179:Colorectal Neoplasms / Q000175:diagnosis / Q000453:epidemiology / Q000601:surgery*; D003107:Colorectal Surgery / Q000191:economics / Q000706:statistics & numerical data; D016208:Databases, Factual; D004638:Emergency Treatment / Q000191:economics / Q000706:statistics & numerical data*; D005260:Female; D006301:Health Services Needs and Demand; D054625:Healthcare Disparities / Q000191:economics / Q000706:statistics & numerical data*; D006801:Humans; D015994:Incidence; D019458:Insurance Coverage / Q000706:statistics & numerical data; D008297:Male; D008484:Medicaid / Q000191:economics / Q000706:statistics & numerical data*; D017057:Medically Uninsured / Q000706:statistics & numerical data*; D008875:Middle Aged; D017063:Outcome Assessment, Health Care; D012042:Registries; D018570:Risk Assessment; D064876:Safety-net Providers / Q000191:economics / Q000706:statistics & numerical data*; D014481:United States; D014768:Virginia