... ofadministration for hydrocodone, methadone, OxyCon-tin®, and oxycodone, while injecting was most commonlyused for hydromorphone and morphine administration.After adjustment for age, race, and gender, ... metcriteria for MDD than did urban participants (Table 1).Drug Use and Route of AdministrationTable 2 describes rural and urban nonmedical drug use and the routes of drug administration for each ... eligibility and obtaining informed consent, an inter-viewer-administered questionnaire was utilized to gatherinformation on soci o-demographic, medical, family/social characteristics, and self-reported...