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Introduction:Over the last years, the number of systematic reviews published is steadily increasing due to the global interest in this type of evidence synthesis. However, little is known about the characteristics of this research published in Portuguese medical journals. This study aims to evaluate the publication trends and overall quality of these systematic reviews.Material and Methods:Systematic reviews were identified through an electronic search up to August 2020, targeting Portuguese Medical journals indexed in MEDLINE. Systematic reviews selection and data extraction were done independently by three authors. The overall quality critical appraisal using the A MeaSurement Tool to Assess systematic Reviews (AMSTAR II) was independently assessed by three authors. Disagreements were solved by consensus.Results:Seventy systematic reviews published in 5 Portuguese medical journals were included. Most (n=57; 81,4%) were systematic reviews without meta-analysis. Until 2010, the number of systematic reviews per year increased. Since then, the number of reviews published has not remained stable and no less than 3 SRs were published per year. According to the systematic reviews’ typology, most have been predominantly conducted to assess the effectiveness of health interventions (n=28; 40,0%). General and Internal Medicine (n=26; 37,1%) was the most addressed field. Most systematic reviews (n=45; 64,3%) were rated as being of “critically low-quality”.Conclusions:There were consistent flaws in the methodological quality report of the systematic reviews included, particularly in establishing a prior protocol and not assessing the potential impact of the risk of bias on the results.Through the years, the number of systematic reviews published increased, yet their quality is suboptimal. There is a need to improve the reporting of systematic reviews in Portuguese medical journals, which can be achieved by better adherence to quality checklists/tools.Systematic review registration: INPLASY202090105

Resumen. Partiendo de varias acciones institucionales y de la creencia popular de que el gallego y el portugués son tan próximos que el entendimiento entre unos y otros ciudadanos es total, nuestro artículo reflexiona sobre la realidad de esta materia en el ámbito de la negociación internacional. Para ello, profundizaremos sobre el uso de la lengua gallega en los negocios internacionales. A partir de ahí, se refutará-o no-la hipótesis de partida que indica que el gallego puede ser un primer paso en un entendimiento mutuo, pero hace falta una mayor inmersión en el idioma a la hora de afrontar una negociación internacional, la cual debe incluir también conocimientos culturales.