We conclude that computerized POE resulted in a
very large decrease in the frequency of non-missed-dose medication errors, the errors that are most likely
to harm patients. Systems such as these have the potential to both fix and cause problems, and require
evaluation. The reductions occurred because order entry both structured orders and facilitated the checking
of them. Further reductions should be possible with
additional decision support and refinement of the system. Such systems should be used more widely.