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Background: Little is known about the quality and impact of Canadian-produced research relative to that of other developed nations. The purpose of this study was to determine the contribution of Canadian authors to the orthopedic literature globally and nationally as well as Canada's research productivity in orthopedics. We hypothesized that Canada ranks among the most impactful countries in terms of orthopedic research productivity., Methods: We performed a bibliometric analysis to identify articles published between 2001 and 2020 in the category of orthopedics. We identified Canada's global rank in terms of overall productivity and assessed the contributions of individual Canadian authors. We also examined the quality of publications as determined by category normalized citation impact (CNCI) and publication in the top quartile of journals (%Q1) in terms of impact factor. In addition, we calculated the percentage of Canadian publications that were in orthopedics., Results: We identified 10 821 orthopedic publications from 2001 to 2020. Canada placed sixth globally in terms of productivity in orthopedic research. The annual productivity of Canadian orthopedic researchers increased over the study period by a factor of 3.2. In terms of research quality, with a %Q1 of 36.5% and a CNCI of 1.22, Canada outperformed Asian countries and the United States; the latter country had a %Q1 of 35.3% and a CNCI of 1.14 over the study period., Conclusion: The body of Canadian orthopedic literature has grown consistently over the past 20 years. Despite the overall leadership of the United States and other developed nations such as China and Japan, Canada ranks among the most influential countries in terms of the quality and quantity of orthopedic research., Competing Interests: Competing interests: B. Matache has received consulting fees from Arthrex and honoraria from Pendopharm. E. Belzile has received royalties from Bodycad, consulting fees from Pendopharm and Victhom and honoraria from Stryker, CONMED, Johnson & Johnson and Pendopharm., (© 2023 CMA Impact Inc. or its licensors.)

Bibliometric analysis, a powerful tool for assessing trends in research output, was employed to analyze the evolution of hypertension research over a 20-year period. The analysis was based on 90 308 original articles and a citation analysis. The use of bibliometric as a potential tool for shaping research policy at the institution or country level was also explored. The number of published hypertension articles increased by 43.5% over the 20-year period. By contrast, the increase in the number of articles in all medical disciplines was 96%, and in the cardiovascular field was 64%. Of the 6 countries producing the largest number of articles, the United States was consistently the major contributor. There was a slight decrease from Japan, a slight increase from the United Kingdom, and relatively stable output from Germany and Italy over the study period. Output from China showed the strongest growth. The trends in Specialization Index and Category Normalized Citation Impact varied by country. In Russia, Poland, and Brazil, increases in output were greater for hypertension research than for medical research in general. The United Kingdom and Denmark had greater hypertension research output than the other countries. VOSviewer analysis showed an intensification of collaborations between countries and a shift, over 10 years, from 3 clusters towards 2 clusters. Such analysis may help to shape research policy at the country level and can be similarly performed for institutions. Historical changes in hypertension research can be monitored over decades if the same channels continue to be used for communication of scientific results.

Background: Little is known about the scientific publication output for individual countries and medical specialties. The contribution of French authors to the currently expanding volume of publications on orthopaedics and traumatology (OT) is unclear. Orthopaedics & Traumatology: Surgery & Research (OTSR) is an English-language version of a preexisting French journal that was launched in 2009 to increase the dissemination of research done in France. The objective of this study was to use Web of Science (WoS) data from 1998 to 2017 to determine (i) the contribution of OT publications to the total worldwide volume of scientific publications, (ii) the contribution of OT publications from France to the total worldwide volume of OT publications, and (iii) changes over time in the proportion of OT publications from France with special attention to potential effects of the creation of OTSR., Hypothesis: The proportion of OT publications from France increased after 2010-2012, indicating a positive effect of OTSR., Material and Methods: WoS data were used to identify original studies and review articles written by at least one French author, published between 1998 and 2017, and dealing with OT (defined as orthopaedics and/or traumatology in adult and/or paediatric patients). The worldwide volumes of publications in OT and other specialties were compared. Within worldwide OT publications, the proportion from France was determined. Indicators of impact were evaluated during successive 5-year periods. Finally, the position of OT in worldwide research was assessed and OT journals were analysed., Results: Among worldwide scientific medical publications, the proportion dealing with OT increased year on year from 1.93% in 1998 to 2.65% in 2017. Among annual publications from France, the proportion dealing with OT rose similarly, from 1.32% to 2.40%. Over the 20-year study period, France moved from the sixth to the ninth position, chiefly due to a large increase in publications from Asia. However, France remained in third position among European countries and increased its OT production 3-fold between 1998 and 2017. The proportion of OT articles from France that ranked among the top 1% most cited articles increased by 65% from 2008-2012 (20 articles) to 2013-2017 (33 articles), and the proportion in the top 10% increased by 31.8% (211 in 2008-2012 and 278 in 2013-2017). This rate of progression was faster than in any of the other western countries. Between 1998-2011 and 2012-2017, the contribution of French OT to publication output showed a 1.56-fold greater increase than did the contribution of OT to the worldwide volume of scientific medical publications., Discussion: OT publications from France have kept pace with the steady increase seen worldwide over the last 20years. Although the US and UK remain in the lead, and despite the considerable growth in the output of Asian countries, France occupies a prominent position on the international OT scene. The creation of OTSR has elevated the international profile of French OT centres., Level of Evidence: IV, retrospective study with no control group., (Copyright © 2019. Published by Elsevier Masson SAS.)