Introduction-objectives: Being an original work, the writing and the elaboration of a thesis must resemble a research work, and must meet the fundamental requirement of an appropriate methodology given that it must constitute the culmination of in-depth and rigorous personal work. The precision of the description of the methods is fundamental and allows the possibility of reproduction of the work of the authors. The aim of this work was to make a contribution to improving the quality of the

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... ntific medical writing of the end of studies theses at the Faculty of Medicine of Sétif through an evaluation study, and an action of introduction to techniques and rules in this area, as well as an evaluation of its impact. Material and methods: This is a comparative survey of the "before -after" type focusing on the study of the quality of scientific medical writing of the "methods" chapter of 109 end-of-study dissertations carried out at the level of the two medical departments. dental and pharmacy from the Faculty of Medicine of Sétif before and after a training session in the field and this during the academic years 2014 -2015, for the first stage prior to training; and 2015 -2016, for the second stage, after the training. Results: Apart from the sample size and the statistical techniques used, the parameters relating to the methodological aspect were specified for three quarters to two thirds of the memories studied, and with significantly higher frequencies at the level of the pharmacy department giving odds-ratios varying between 7 and 14 (p <1 p. 1000). Discussion -Conclusion: In addition to the clear predominance of clinical cases at the level of the dental department, the great diversity of the types of studies carried out was at the origin of that of the observed results. Despite a relatively satisfactory level of the editorial aspect of the methodology of the dissertations studied, the integration of training programs in the subject in the two cycles, graduate and post-graduate, is a necessity. It would constitute a means of learning, useful for the whole career of the students; and a means of development for professionals and teachers. It would certainly contribute to improving the quality of scientific texts, final theses, doctoral theses, communications and publications, and therefore to the promotion of scientific production.