• Rodrigo Marín-Navarrete, Liliana Templos-Nuñez, Angélica Eliosa-Hernández, Luis Villalobos-Gallegos, José Fernández-Mondragón, Alejandro Pérez-López, Diana Galván-Sosa, Rosa E Verdeja, Elizabeth Alonso, Daniel J Feaster, and Viviana E Horigian.
• 1Clinical Trials Unit on Addiction and Mental Health, Instituto Nacional de Psiquiatría Ramón de la Fuente , Mexico City , Mexico.
• Subst Use Misuse. 2014 Nov 1; 49 (13): 1784-94.

BackgroundBaseline patients' characteristics are critical for treatment planning, as these can be moderators of treatment effects. In Mexico, information on treatment seekers with substance use disorders is scarce and limited to demographic characteristics.ObjectiveThis paper presents and analyses demographic characteristics, substance use related problems, clinical features, and addiction severity in a sample of treatment seekers from the first multi-site randomized clinical trial implemented in the Mexican Clinical Trials Network on Addiction and Mental Health.MethodsA total of 120 participants were assessed prior randomization. Chi square or F-tests were used to compare sites across variables. Spearman correlation was used to associate negative consequences of substance use and motivation to change.ResultsThe majority of participants were men, and the most prevalent substances reported were alcohol, marijuana, and cocaine. Participants were predominantly on the contemplation or action stage of change, and this was correlated with the perception of the negative consequences associated with substance use. Participants reported a high prevalence of substance use related problems.ConclusionsSubstance use related problems, clinical features, and addiction severity reported by treatment seekers are important characteristics to take into account when planning treatment as they facilitate tailoring treatment to meet patients' needs.

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