NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

NBER Publications by John A.. Graves

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March 2012Do High-Cost Hospitals Deliver Better Care? Evidence from Ambulance Referral Patterns
with Joseph J. Doyle, Jr., Jonathan Gruber, Samuel Kleiner: w17936
Endogenous patient sorting across hospitals can confound performance comparisons. This paper provides a new lens to compare hospital performance for emergency patients: plausibly exogenous variation in ambulance-company assignment. Ambulances are effectively randomly assigned to patients in the same area based on rotational dispatch mechanisms. Using Medicare data from 2002-2008, we show that ambulance company assignment importantly affects hospital choice for patients in the same zip code. Using data for New York state from 2000-2006 that matches exact patient addresses to hospital discharge records, we show that patients who live very near each other but on either side of ambulance-dispatch boundaries go to different types of hospitals. Both strategies show that higher-cost hospitals hav...

Contact and additional information for this authorAll papers and publicationsWorking Papers onlyWorking Papers with publication info

 
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