Review: ordering medications by computer can reduce medication errors.

S t u d y s e l e c t i o n a n d a s s e s s m e n t Studies were selected if they were randomized controlled trials (RCTs), nonrandomized controlled trials, or observational studies with controls that evaluated CPOE or CDSSs for reducing medication errors, and measured clinical (any measure of morbidity or mortality including adverse drug events) or surrogate (observed errors and intermediate outcome such as laboratory test results with a well-established connection to the clinical outcomes of interest [usually adverse effects]) outcomes.