Ethnic and Age Disparities in Patients Taking Long-acting Injectable Atypical Antipsychotics

Introduction This study will determine whether different ethnicities and different age groups receive equal amounts of long-acting atypical antipsychotics in comparison to their oral equivalents. Methods Secondary analyses of data from the Los Angeles County Department of Health Services Electronic Health Record (total N=63,134 inpatient visits) were performed. Chi-squared statistics were used to compare ethnicity and age with the use of either risperidone injectable or paliperidone palmitate (r-LAIs) versus risperidone oral. Results Among the 63,134 total inpatient visits, there were 3,011 patient visits that included the use of an atypical antipsychotic. Of these 3,011 visits, 452 (15.0%) were on r-LAIs and 2,559 (85.0%) were on risperidone oral. No statistically significant disparities were identified with the use of r-LAIs as compared to oral risperidone amongst ethnic groups (chi-square = 0.88, df = 3, p = 0.831). However, there was a statistically significant difference with the use of r-LAIs as compared to oral Risperidone amongst age groups, favoring younger patients (chi-square = 13.46, df = 3, p < 0.004). Conclusion Our data indicate a lack of ethnic disparities in prescribing long-acting atypical antipsychotics and an increased percentage of younger patients being treated with atypical depot antipsychotics over their oral equivalents.