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Chronic exposure to cocaine is associated with persistent behavioral disturbances. A cross-sectional dimensional study in outpatients with multiple substance use disorders
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Edité par CCSD ; Springer Verlag -
International audience. Rationale Behavioral disturbances (BD) are prevalent in patients with substance use disorders (SUD). Objectives To test the hypothesis that chronic exposure to cocaine could favor the acquisition of BD that were not present in childhood. Methods We used child and adult ADHD self-report screening scales (WURS-25 and ASRS-6, respectively, with their usual threshold) as assessment tools for significant BD. In a cross-sectional assessment of 382 patients with multiple SUD, we investigated BD and then "de novo" BD (i.e., by restricting the sample to patients below the threshold for childhood BD) (N = 214). We also tested for a gradient effect between patients' lifetime DSM IV cocaine and opioid dependence status and the prevalence of BD. Results BD were found in 188/382 (42.9%) subjects and in 74/214 (34.6%) subjects. Three clinical factors were associated with BD in the whole sample: the number of cocaine dependence criteria (OR = 1.36 [1.14-1.64], p = 0.001), the number of opioid dependence criteria (OR = 0.69 [0.52-0.91], p = 0.010), and a personal history of using cocaine through rapid routes of administration (OR = 0.41 [0.19-0.88], p = 0.022). The same three factors were associated with "de novo" BD in the restricted sample: OR = 1.35 ([1.11-1.63], p = 0.002), OR = 0.83 ([0.70-0.99], p = 0.046), and OR 0.37 ([0.16-0.86], p = 0.022), respectively. There were significant gradients for BD according to the cocaine exposure categories in the whole (Mantel-Haenszel, p < 0.001) and in the restricted sample (Mantel-Haenszel, p = 0.002). Conclusions Cocaine exposure was positively associated with behavioral disturbances in a dose-dependent manner in this clinical sample, whilst opioid exposure showed a negative association.
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