title: Stages and processes of change among polydrug users in methadone maintenance treatment.
abstract: We applied the stages-of-change model of Prochaska and DiClemente to the problem of drug use among methadone maintenance patients to examine correlates of different stages of treatment readiness. The 276 subjects were divided into stage categories based on self-reported drug use and questionnaire responses regarding plans to discontinue unauthorized drug use in the future. Confirmatory factor analytic procedures validated four process scales derived from a 60-item questionnaire. Each stage was characterized by a profile of change-process scores largely consistent with predictions, though these scores did not distinguish stages as clearly as has been reported in previous research. Analysis of subject characteristics revealed that those in the Precontemplation stage reported significantly longer treatment tenures than subjects in any other stage besides Maintenance.
authors.affiliation: Department of Psychiatry, Medical College of Pennsylvania, Philadelphia, USA.
authors.forename: M A
authors.initials: MA
authors.lastname: Belding
authors.forename: M Y
authors.initials: MY
authors.lastname: Iguchi
authors.forename: R J
authors.initials: RJ
authors.lastname: Lamb
authors.forename: M
authors.initials: M
authors.lastname: Lakin
authors.forename: R
authors.initials: R
authors.lastname: Terry
mesh_terms: D000328:Adult; D015897:Comorbidity; D005260:Female; D006556:Heroin Dependence / Q000453:epidemiology* / Q000523:psychology / Q000534:rehabilitation; D006801:Humans; D013287:Illicit Drugs; D008297:Male; D008691:Methadone / Q000627:therapeutic use*; D008875:Middle Aged; D010342:Patient Acceptance of Health Care; D015143:Philadelphia / Q000453:epidemiology; D011619:Psychotropic Drugs; D015813:Substance Abuse Detection; D016320:Substance Abuse Treatment Centers; D019966:Substance-Related Disorders / Q000453:epidemiology* / Q000523:psychology / Q000534:rehabilitation; D016896:Treatment Outcome
chemical_list: D013287:Illicit Drugs; D011619:Psychotropic Drugs; D008691:Methadone