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J Am Med Inform Assoc doi:10.1136/amiajnl-2012-001241
  • Research and applications

Reduction in medication errors in hospitals due to adoption of computerized provider order entry systems

Table 4

Outcome and supporting statistics

Calculated metric Data source Point estimate Estimate bound
Supporting statistics
 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%)
Outcome statistics
 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.

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