: Background: Studies of the prevalence of substance abuse in rural and urban population in
different countries revealed variable results regarding to the study method, study population,
age group and measuring tools. The purpose of this research is to compare the patterns of
substance abuse disorders in urban and rural population in Mashhad. Materials and
Method: Two groups consecutively admitted patients who referred to substance treatment
clinics of Mashhad, were selected (110 urban and 100 rural patients). Samples were …