RESUMO
Background: Timely and reliable dispensing of buprenorphine is critical to accessing treatment for opioid use disorder (OUD). Racial and ethnic inequities in OUD treatment access are well described, but it remains unclear if inequities persist at the point of dispensing. Methods: We analyzed data from a U.S. telephone audit that measured restricted buprenorphine dispensing in community pharmacies, defined as inability to fill a buprenorphine prescription requested by a "secret shopper." Using the Index of Concentration at the Extremes (ICE), we constructed county-level measures of racial, ethnic, economic, and racialized economic (joint racial and economic segregation) segregation. Logistic regression models evaluated the association of ICE measures and restricted buprenorphine dispensing, adjusting for county type (urban vs. rural) and pharmacy type (chain vs. independent). Results: Among 858 pharmacies surveyed in 473 counties, pharmacies in the most ethnically segregated and economically deprived counties had 2.66 times the odds (95 % CI: 1.41, 5.17) of restricting buprenorphine dispensing, compared to pharmacies in the most privileged counties after adjustment. Pharmacies in counties with high racialized economic segregation (quintile 2 and 3) also had higher odds of restricting buprenorphine dispensing (aOR 3.09 [95 % CI 1.7, 5.59]; aOR 2.11 [95 % CI 1.17, 3.98]). Similar associations were observed for economic segregation (aOR: 2.18 [95 % CI: 1.21, 3.99]), but not ethnic (0.59 [0.34, 1.05]) or racial (0.61 [0.35, 1.07]) segregation alone. Conclusions: Restricted buprenorphine dispensing was most pronounced in socially and economically disadvantaged communities, potentially exacerbating gaps in OUD treatment access. Policy interventions should target both prescribing and dispensing capacity to advance pharmacoequity.
RESUMO
BACKGROUND: Pharmacies sometimes restrict access to buprenorphine-naloxone (buprenorphine) for individuals with opioid use disorder. The objective of this study was to quantify the frequency of barriers encountered by patients seeking to fill buprenorphine prescriptions from pharmacies in United States (US) counties with high opioid-related mortality. METHODS: To characterize buprenorphine availability, we conducted a telephone audit ("secret shopper") study using a standardized script in two randomly selected pharmacies (one chain, one independent) in US counties reporting higher than average opioid overdose rates. Availability across pharmacy type (chain versus independent), county characteristics (rurality, region, overdose rate), and day of week were analyzed using univariate tests of categorical data. Independent predictors of buprenorphine availability were then identified using a multivariable binomial regression model. RESULTS: Among 921 pharmacies contacted (467 chain, 454 independent), 73 % were in urban counties and 42 % were in Southern states. Of these pharmacies, 675 (73 %) reported being able to dispense buprenorphine. There were 183 (20 %) pharmacies that indicated they would not dispense buprenorphine. Independent pharmacies (adjusted prevalence ratio [aPR], 1.59; 95 % CI 1.21-2.08) and pharmacies in Southern states (aPR 2.06; 95 % CI 1.43-2.97) were significantly more likely to restrict buprenorphine. CONCLUSIONS: In US counties with high overdose mortality rates, one in five pharmacies indicated they would not dispense buprenorphine. Buprenorphine access limitations were more common among independent pharmacies and those in Southern states. Pharmacy-directed interventions may be necessary to ensure timely buprenorphine access for patients with opioid use disorder.