***TASK***
the task is to simplify the input abstract of a biomedical literature

***INPUT***
the input is the abstract of a biomedical literature

***OUTPUT***
the output is the simplified abstract for the input abstract of a biomedical literature

***DOCUMENTATION***

***EXAMPLES***

Input: We included a total of 20 studies with 2068 participants. We studied the anticonvulsant drugs carbamazepine, gabapentin, lamotrigine, phenytoin, tiagabine, topiramate and vigabatrin. All studies compared anticonvulsants versus placebo. Only one study had one arm by which the anticonvulsant was compared with the antidepressant desipramine. Upon comparison of anticonvulsant versus placebo, we found no significant differences for any of the efficacy and safety measures. Dropouts: risk ratio (RR) 0.95, 95% confidence interval (CI) 0.86 to 1.05, 17 studies, 20 arms, 1695 participants, moderate quality of evidence. Use of cocaine: RR 0.92, 95% CI 0.84 to 1.02, nine studies, 11 arms, 867 participants, moderate quality of evidence; side effects: RR 1.39, 95% CI 1.01 to 1.90, eight studies, 775 participants; craving: standardised mean difference (SMD) -0.25, 95% CI -0.59 to 0.09, seven studies, eight arms, 428 participants, low quality of evidence. Although caution is needed when results from a limited number of small clinical trials are assessed, no current evidence supports the clinical use of anticonvulsant medications in the treatment of patients with cocaine dependence. Although the findings of new trials will improve the quality of study results, especially in relation to specific medications, anticonvulsants as a category cannot be considered first-, second- or third-line treatment for cocaine dependence.
Output:

The review authors searched scientific databases and Internet resources to identify randomised controlled trials (in which participants were allocated at random to any anticonvulsant drug or placebo or another type of drug or non-pharmacological intervention intended to reduce,the use of cocaine). We assessed also dropout from treatment and frequency of side effects .We included people of any gender, age or ethnicity. The review authors identified 20 studies with 2068 participants, 77% male, with a mean age of 36 years. The mean duration of the trials was 11.8 weeks (range eight to 24 weeks). All but two of the trials were conducted in the USA, all with outpatients. The anticonvulsant drugs studied were carbamazepine, gabapentin, lamotrigine, phenytoin, tiagabine, topiramate and vigabatrin. All studies compared anticonvulsants versus placebo. No significant differences were found between placebo and any anticonvulsant in reducing the number of dropouts from treatment, use of cocaine, craving and severity of dependence, depression or anxiety. Side effects were slightly more frequent in the anticonvulsant groups. No current evidence supports the clinical use of anticonvulsant medications for the treatment of cocaine dependence. The quality of the evidence was moderate for the outcomes dropout and use of cocaine, and was low for the outcomes side effects and craving. The major limitation of the trials was incomplete reporting of the methods used to protect against selection bias, randomly allocate participants to groups and conceal allocation. The evidence is current to June 2014.