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 po-tential to both fix and cause problems, and require
evaluation. The reductions occurred because order en-try both structured orders and facilitated the checking
of them. Further reductions should be possible with
additional decision support and refinement of the sys-tem. Such systems should be used more widely.