The aim of this study is to retrospectively evaluate and describe the use of antipsychotics among participants enrolled in the Program of All-inclusive Care for the Elderly (PACE), a community-based practice setting.

Much national attention has been given to assessing and reducing the use of antipsychotics among nursing home residents, yet comparatively little attention has focused on antipsychotic use among older adults receiving care in community-based settings. The primary objective of this study is to determine the prevalence of antipsychotic use among a nationally representative sample of nursing home-eligible older adults in a community-based practice setting known as Program of All-inclusive Care for the Elderly (PACE). The secondary objectives are focused on characterizing antipsychotic use within PACE and for these participants. Specifically, the investigator's secondary objectives are to describe patterns of other drugs concomitantly used with antipsychotics (e.g., benzodiazepines, opioids) and to identify clinically relevant drug-drug interactions involving antipsychotics.

Inclusion Criteria:

• Participant enrolled in PACE contractually receiving pharmacy services from Tabula Rasa Healthcare CareKinesis Pharmacy (Tabula Rasa HealthCare) during the project time period (January 2017 through December 2017).

Exclusion Criteria:

• Participant with a diagnosis of bipolar disorder and/or schizophrenia, according to pharmacy records.

Program of All-inclusive Care for the Elderly (PACE) is a Medicare-Medicaid program that provides comprehensive medical and supportive services to individuals >55 years of age who are certified by their state as needing nursing home care but are able to live safely in the community through PACE, as an alternative to institutionalization.

There will be no disclosure of participant information and no details of participant identity will be part of any presentation or publication of the research. Participant confidentiality will be held in strict trust by the project investigators. The project data or other information generated will be held in strict confidence. No information concerning the project or the data will be released to any unauthorized third party without prior written consent.