|Calculated metric||Data source||Point estimate||Estimate bound|
|Mean % reduction in medication error rates conditional on using CPOE to prescribe the order||Peer-reviewed literature||−48%||(−55% to −41%)|
|Proportion of medication orders that are ordered using a CPOE system||Hospital surveys (2007 AHA annual survey, 2008 EHR adoption database, 2006 ASHP National Survey)||26.10%||(16.0% to 53.6%)|
|Percentage reduction in medication error frequency resulting from CPOE use to process medication orders||Calculated from supporting statistics||−12.5%||(−14.4% to −10.6%)|
|Absolute reduction in medication error frequency resulting from CPOE use to process medication orders||Calculated from supporting statistics||17390443||(88058 to 27094038)|
AHA, The American Hospital Association; ASHP, The American Society of Health-System Pharmacists; CPOE, computerized provider order entry; EHR, electronic health record.