Background. Health care organizations may be able to use pharmacy data to identify
patients with schizophrenia and poor antipsychotic adherence. Objective. To determine
whether a pharmacy-based measure of outpatient adherence, the medication possession
ratio (MPR), is associated with adverse outcomes among patients with schizophrenia, as
evidenced by increased psychiatric admission. Research Design. Cohort study linking
pharmacy and utilization data for veterans with schizophrenia. MPRs were calculated by …