Patterns of Antipsychotic Dispensation to Long-Term Care Residents.

OBJECTIVES: To describe dispensing patterns of antipsychotic medications to long-term care (LTC) residents and assess factors associated with continuation of an antipsychotic after a fall-related hospitalization. DESIGN: A retrospective cohort study. SETTING AND PARTICIPANTS: Nova Scotia Seniors Pharmacare Program (NSSPP) beneficiaries age 66 years and older who resided in LTC and received at least 1 dispensation of an antipsychotic within the study period of April 1, 2009, to March 31, 2017. METHODS: Linkage of administrative claims data from the NSSPP and the Canadian Institute of Health Information Discharge Abstract Database identified LTC residents with an antipsychotic dispensation and from the subgroup of those dispensed antipsychotic medications who experienced a fall-related hospitalization. Antipsychotic dispensing patterns were reported with counts and means. Predictors of continuation of an antipsychotic after a fall-related hospitalization (sex, length of stay, days supplied, age, year of admission, rural/urban) were reported and analyzed with multiple logistic regression. RESULTS: There were 19,164 unique NSSPP beneficiaries who were dispensed at least 1 prescription for an antipsychotic medication. Of those who received at least 1 antipsychotic dispensation 90% (n = 17,201) resided in LTC. A mean of 40% (n = 2637) of LTC residents received at least 1 antipsychotic dispensation in each year. Risperidone and quetiapine were dispensed most frequently. Of the 544 beneficiaries residing in LTC who survived a fall-related hospitalization, 439 (80.7%) continued an antipsychotic after hospital discharge. Female sex [OR 1.7, 95% CI (1.013‒2.943)], age 66‒69 [OR 4.587, 95% CI (1.4‒20.8)], 75-79 [OR 2.8, 95% CI (1.3‒6.3)], and 80‒84 years [OR 3.1, 95% CI (1.6‒6.4)] (compared with age 90+ years) were associated with increased risk of antipsychotic continuation. CONCLUSIONS AND IMPLICATIONS: With 90% of antipsychotic dispensations in Nova Scotia being to LTC residents and 40% of LTC residents being dispensed antipsychotics in any year there is a need to address this level of antipsychotic dispensation to older adults.