Observed number of overprescribed medicines and underprescribed medicines in the medication review group as a function of the number of medicines prescribed at baseline. Overprescribed medicines are medicines that were reduced in dosage or discontinued during the first visit. Underprescribed medicines are medicines that were increased in dosage or prescribed during the first visit. The fitted lines are loess regressions with 95% confidence intervals shaded in grey. All points are jittered slightly to reduce overplotting.