The Australian Team Approach to Polypharmacy Evaluation and Reduction (AusTAPER) hospital study: effect of a collaborative medication review on the number of current regular medicines for older hospital inpatients.

Medicines were significantly reduced in both groups, with a trend to a larger reduction in medicines at 12 months in the intervention group. The intervention cost was approximately offset by sustained reduced medicines cost, although these results should be regarded cautiously because of the absence of significance in the differences in outcomes between groups.