@article {barnett_adverse_2016,
	title = {Adverse inpatient outcomes during the transition to a new electronic health record system: observational study},
	journal = {BMJ},
	volume = {354},
	year = {2016},
	pages = {i3835},
	abstract = {{Objective To assess the short term association of inpatient implementation of electronic health records (EHRs) with patient outcomes of mortality, readmissions, and adverse safety events. Design Observational study with difference-in-differences analysis. Setting Medicare, 2011-12. Participants Patients admitted to 17 study hospitals with a verifiable {\textquotedblleft}go live{\textquotedblright} date for implementation of inpatient EHRs during 2011-12, and 399 control hospitals in the same hospital referral region. Main outcome measures All cause readmission within 30 days of discharge, all cause mortality within 30 days of admission, and adverse safety events as defined by the patient safety for selected indicators (PSI)-90 composite measure among Medicare beneficiaries admitted to one of these hospitals 90 days before and 90 days after implementation of the EHRs (n=28 235 and 26 453 admissions), compared with the control group of all contemporaneous admissions to hospitals in the same hospital referral region (n=284 632 and 276 513 admissions). Analyses were adjusted for beneficiaries{\textquoteright} sociodemographic and clinical characteristics. Results Before and after implementation, characteristics of admissions were similar in both study and control hospitals. Among study hospitals, unadjusted 30 day mortality (6.74\% to 7.15\%},
	issn = {1756-1833},
	doi = {10.1136/bmj.i3835},
	url = {http://www.bmj.com/content/354/bmj.i3835},
	author = {Michael L. Barnett and Ateev Mehrotra and Anupam B. Jena}
}
