ôbjective: to assess the prevalence of opioid abuse in a sample of male population in shiraz, ïran. methods: â representative sample of 1219 subjects (aged 16 years or older) who were referred for urine opioid screen (üôs) as a mandatory test before marriage in shiraz in 2005 were enrolled in this study. results: mean age of the participants was 26.17 years (sd=6.12), ranging from 16 to 75 year...