title: Predicting substance abuse treatment completion using a new scale based on the theory of planned behavior.
abstract: We examined whether a 9-item scale based on the theory of planned behavior (TPB) predicted substance abuse treatment completion. Data were collected at a public, outpatient program among clients initiating treatment (N=200). Baseline surveys included measures of treatment-related attitudes, norms, perceived control, and intention; discharge status was collected from program records. As expected, TPB attitude and control components independently predicted intention (model R-squared=.56), and intention was positively associated with treatment completion even including clinical and demographic covariates (model R-squared=.24). TPB components were generally associated with the alternative readiness scales as expected, and the TPB remained predictive at higher levels of coercion. Meanwhile, none of the standard measures of readiness (e.g., the URICA and TREAT) or treatment coercion were positively associated with treatment participation. Results suggest promise for application of the TPB to treatment completion and support use of the intention component as a screener, though some refinements are suggested.
authors: Alcohol Research Group, 6475 Christie Ave., Suite 400, Emeryville, CA 94608-1010, USA. Electronic address: szemore@arg.org.
authors: Sarah E
authors: SE
authors: Zemore
authors: Icek
authors: I
authors: Ajzen
mesh_terms: D000293:Adolescent; D000328:Adult; D000553:Ambulatory Care / Q000379:methods*; D001294:Attitude to Health; D003625:Data Collection; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008962:Models, Theoretical; D009042:Motivation; D010342:Patient Acceptance of Health Care; D011582:Psychological Theory; D019966:Substance-Related Disorders / Q000523:psychology / Q000534:rehabilitation*; D016896:Treatment Outcome; D055815:Young Adult
keywords: Social desirability; Stage of change; Transtheoretical model; Treatment attendance; Treatment motivation; Treatment retention
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