Objective: To compare drug use for cities along the USMexico border.
Materials and methods: Data are from the US-Mexico Study on Alcohol and Related Conditions (UMSARC, 2011-2013), a survey of 4 796 randomly selected BMexican and of Mexican origin individuals on both sides of the border.
Results: Higher rates of any past-year drug use and symptoms of drug use disorders were found only in the border city of Laredo, when compared to the non-border city of San Antonio. Nuevo Laredo and Reynosa/Matamoros showed higher rates of drug use than the non-border city of Monterrey. Much higher rates (OR's in the range of 4-11) were found in the US cities when compared to their acrossthe-border Mexican counterparts.
Conclusions: Drug use is high on the border for the selected Mexican cities. Misuse of prescription drugs is nevertheless a concern in the south Texas border cities in our study.
Keywords: Mexican Americans; border health; drug use.; epidemiology; survey.