Kiersten L Johnson1, Sarah L Desmarais2, Marvin S Swartz3, Richard A Van Dorn4. 1. Department of Psychology, North Carolina State University, Campus Box 7650, Raleigh, NC 27695, United States. Electronic address: kljeske@ncsu.edu. 2. Department of Psychology, North Carolina State University, Campus Box 7650, Raleigh, NC 27695, United States. Electronic address: sdesmarais@ncsu.edu. 3. Department of Psychiatry & Behavioral Sciences, Duke University Medical Center, 238 Civitan Building, Box 3173, Durham, NC 27710, United States. Electronic address: marvin.swartz@duke.edu. 4. Behavioral Health Epidemiology Program, RTI International, 3040 E. Cornwallis Road, P.O. Box 12194, Research Triangle Park, NC 27709, United States. Electronic address: rvandorn@rti.org.
Abstract
OBJECTIVE: The primary aim is to examine concordant/discordant results of drug use assessments in adults with schizophrenia. METHODS: Latent class analysis and multinomial logistic regression were used to examine concordance/discordance between drug use measures and identify characteristics differentiating participants across classes. RESULTS: Four classes - non-users, users, probable users, and RIA discordant - fit best. Age, sex, race/ethnicity, and psychiatric symptoms differed significantly across classes. CONCLUSIONS: Findings showed that discordance between results occurs at non-trivial rates and is, in part, attributable to individual characteristics. Results suggest the need for strategies to limit discordance and improve detection of drug use in adults with schizophrenia.
RCT Entities:
OBJECTIVE: The primary aim is to examine concordant/discordant results of drug use assessments in adults with schizophrenia. METHODS: Latent class analysis and multinomial logistic regression were used to examine concordance/discordance between drug use measures and identify characteristics differentiating participants across classes. RESULTS: Four classes - non-users, users, probable users, and RIA discordant - fit best. Age, sex, race/ethnicity, and psychiatric symptoms differed significantly across classes. CONCLUSIONS: Findings showed that discordance between results occurs at non-trivial rates and is, in part, attributable to individual characteristics. Results suggest the need for strategies to limit discordance and improve detection of drug use in adults with schizophrenia.
Authors: Jeffrey W Swanson; Marvin S Swartz; Richard A Van Dorn; Eric B Elbogen; H Ryan Wagner; Robert A Rosenheck; T Scott Stroup; Joseph P McEvoy; Jeffrey A Lieberman Journal: Arch Gen Psychiatry Date: 2006-05
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