title: Marriage and relationship closeness as predictors of cocaine and heroin use.
abstract: Marriage has been cited as a protective factor against drug use, but the relationship between marriage and drug use has not been explored longitudinally during addiction treatment. The current study assessed individual trajectories of substance use during treatment as a function of marital status and perceived closeness of the marital relationship. A parallel-process growth model was used to (1) estimate the rate of change in percentage of cocaine-positive and heroin-positive urine samples, and (2) examine the relationship between marital status and drug use trajectories over 35 weeks, during and after treatment. Percent days of use for both drugs were lowest for married participants across all time points. Among married participants, reporting a close relationship with one's partner predicted less cocaine and heroin use. These findings suggest that being married and having a close relationship with one's spouse are associated with better outcomes over time. The causal nature of the association is suggested by previous research that has demonstrated the effectiveness of couples therapy as an adjunct to methadone maintenance.
authors.affiliation: University of Illinois at Chicago, Department of Psychology (MC 285), 3022A Behavioral Sciences Building, 1007 W. Harrison St., Chicago, IL 60302, USA. aheinz3@uic.edu
authors.forename: Adrienne J
authors.initials: AJ
authors.lastname: Heinz
authors.forename: Johnny
authors.initials: J
authors.lastname: Wu
authors.forename: Katie
authors.initials: K
authors.lastname: Witkiewitz
authors.forename: David H
authors.initials: DH
authors.lastname: Epstein
authors.forename: Kenzie L
authors.initials: KL
authors.lastname: Preston
mesh_terms: D000328:Adult; D000368:Aged; D019970:Cocaine-Related Disorders / Q000523:psychology / Q000534:rehabilitation*; D019546:Couples Therapy; D005260:Female; D006556:Heroin Dependence / Q000523:psychology / Q000534:rehabilitation*; D006801:Humans; D008297:Male; D008691:Methadone / Q000627:therapeutic use*; D008875:Middle Aged; D009042:Motivation; D009294:Narcotics / Q000627:therapeutic use*; D012944:Social Support; D018454:Spouses / Q000523:psychology*; D016896:Treatment Outcome; D055815:Young Adult
chemical_list: D009294:Narcotics; D008691:Methadone