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  • Title: Relationship between intravenous use and achieving initial cocaine abstinence.
    Author: Budney AJ, Higgins ST, Bickel W, Kent L.
    Journal: Drug Alcohol Depend; 1993 Apr; 32(2):133-42. PubMed ID: 8508724.
    Abstract:
    This study assessed whether route of cocaine administration (intravenous vs. intranasal) influences cocaine abstinence during the first 6 weeks of outpatient treatment. Fifty-nine persons received behavioral treatment or standard drug counselling in an outpatient clinic. Based on information collected at intake, intravenous users had fewer years of education, were employed in less skilled jobs, were less likely to be married, reported more negative consequences from cocaine use, reported using more cocaine per occasion and spent more money on cocaine per week than intranasal users. Intravenous and intranasal users did not differ significantly in the average duration of continuous cocaine abstinence (mean = 2.6 vs. mean = 3.3 weeks achieved during 6 weeks of treatment). The duration of abstinence between intravenous and intranasal users was equal in the behavioral treatment (mean = 4.2). In standard treatment the average duration was less among intravenous than intranasal users (mean = 0.9 vs. mean = 2.4), but that difference did not achieve statistical significance. Hepatitis and employment instability were associated with shorter periods of cocaine abstinence among intravenous users, whereas employment instability, lower job skill level, drug use severity and reports of memory loss were associated with shorter periods of cocaine abstinence among intranasal users. These results indicate that i.v. cocaine users can achieve a period of initial abstinence in an outpatient setting comparable to the duration of typical inpatient hospitalizations, although special types of outpatient treatment may be necessary to obtain a positive outcome.
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