Treatment Patterns With Antipsychotics in Long-Term Care Patients With Parkinson's Disease Psychosis.

This study assessed treatment change patterns in Parkinson's disease psychosis (PDP) residents receiving antipsychotic (AP) therapies in U.S. long-term care (LTC) facilities. Residents with PDP in LTC between 01/01/13 and 06/30/16 were identified with ≥1 claim of psychosis, hallucinations, or delusions after PD diagnosis. Treatment patterns were evaluated during the 12 months post index. We identified 864 PDP residents: 408 (47.2%) on AP therapy and 456 (52.8%) on no AP therapy. A total of 335 residents (82.1%) continued, 13 (3.2%) discontinued, 11 (2.7%) switched, and 49 (12.0%) augmented (used ≥2 APs) their index AP therapy. Based on the multivariate regression analysis, younger age, male gender, anemia, anxiolytic use or anxiety, sedatives/hypnotic use, bladder disorders including urinary tract infections, coronary conditions, diabetes, hypertension, and dementia were associated with a higher likelihood of treatment change. Understanding the factors associated with treatment change may inform ways to improve management of PDP in the U.S. LTC setting.