Socio-ecological and pharmacy-level factors associated with buprenorphine stocking at pharmacies in New York City

Background: Research is lacking on community and pharmacy-level factors that are associated with stocking buprenorphine. To address these gaps, this study applied a socio-ecological framework to estimate the association between community- and pharmacy-level factors and buprenorphine stocking among a sample of pharmacies in New York City. Methods: A telephone survey recruitment strategy was used to administer surveys to 662 pharmacies on the New York City Naloxone Standing Order Pharmacy list in 2018. The survey assessed pharmacy-level factors of private spaces to consult with pharmacists, type of pharmacy (chain/independent), size of pharmacy, having buprenorphine in stock and being open on nights and weekends. Socio-ecological variables drawn from census tract and public health data consisted of racial and ethnic composition, rates of poverty, rates of people without insurance, and rates of overdose. Mixed effects logistic regression estimated odds ratios (OR) of carrying buprenorphine in stock after adjusting for socio-ecological and pharmacy-level factors. Results: Fewer than half of the pharmacies reported having buprenorphine in stock (43.81% n = 290). Logistic regression analyses indicate that several pharmacy-level factors - the number of private spaces (aOR=1.67 95% CI=1.20, 2.32 p=.002), large size of the pharmacy (aOR=1.52 95% CI=1.04, 2.22, p=.032), having naloxone in stock (aOR=1.54, 95%CI=1.03, 2.32 p=.037), as well as neighborhood-level factors of higher rates of poverty (aOR=2.07 95%CI=1.07, 4.02 p<.001) and higher rates of uninsured residents were associated with carrying buprenorphine (aOR=0.23 95%CI=0.14,.38). Conclusions: Using a socio-ecological framework, this study identified inequities in pharmacy stocking of buprenorphine by neighborhood rates of health insurance. At the pharmacy level, increasing private spaces for consultation and encouraging co-stocking of naloxone with buprenorphine stocking may reduce inequalities in buprenorphine availability.