RESUMO
Based on the Scopus record, Nitric Oxide journal (NOJ) has completed 25 years of publications. On March 8, 2022, the publication data was retrieved from the Scopus database and analyzed on VOSviewer and R-Studio (Bibliometrix R package/Biblioshiny). NOJ has published 1928 research documents majorly comprising of articles (1611/83.56%) and reviews (210/10.89%). The total citations and h-index were 56291 & 97, respectively. The per year (from 1997 to 2022) publications and citations are presented in this study. We tried to highlight some of the influential researchers, institutes, and countries. In all publications, 7450 authors have contributed with a collaboration index of 0.241. For all authors, we provided descriptive details about their total number of publications (NoP), total citations (TC), h-index, g-index, m-index, citations per paper (CPP), citation per year (CPY), HG Sqrt and Q2Index. Based on each indicator, we highlighted the top five scientists. The research publications (over time) of the top ten authors are also described. Furthermore, the collaboration network of authors is graphically presented. We also provided descriptive details about the most productive institutes. The highest number of documents are published by the University of Sao Paolo (n = 78), Brazil, while in-country sections, USA has the highest number of publications (n = 553) with 21739 citations and 69 h-index. In the same vein, for each era (five years) details about the top five countries are provided. In all publications (n = 1794), 34 European, 3 North American, 13 Asian, 10 South American, 5 Middle East, 8 African and 2 Asia Pacific countries have contributed. Numerical details about the collaboration links of all countries and the per-era contributions of the top ten countries are also provided. Based on the co-words analysis the per era research focus is graphically presented. Descriptive details about the major trends in publication in each era are also provided. We also manually analyzed 160 words that appeared more than thirty thousand (n = 30,000) times and tried to provide a broader overview of research publications. Based on Scopus record, the NOJ ranking is yearly improving and presently (2021-2022) it holds 14th and 17th positions in clinical biochemistry and physiology. The success could be attributed to all researchers, institutes, editors-in-chief, reviewers, editorial board & entire management.
RESUMO
BACKGROUND: The objective of the present review is to perform the 1st bibliometric analysis of sleep disorders research. METHODS: The data was retrieved from Scopus in July 2020 for detailed analysis. RESULTS: The 1st precise document about the sleep disorder was published in 1945. Till 15th July 2020, a total of 69657 documents were found in the Scopus database. Approximately eighty-two percent (57013/81.87%) of documents are published in the last twenty years (from 2001-2020). We calculated the per-year Growth Rate (GR) of publications (from 2000-onwards). The highest number of documents are published in 2019 (4337/7.90% of 57013) followed by 2018 (4249/7.74% of 57013) and 2017 (3974/7.24% of 57013). The productivity index (PI) for 1950-1960 and 2011-2020 era was found to be 100.21. We also provided the details of the top 50 countries with the maximum number of publications (from 1945 to July 2020). The top three (3) countries are the USA, with 24262 publications (34.83%), followed by UK (5566/8.0%) and Germany (4791/6.87%). We also performed the co-words analysis. Total 956643 (0.95 million) keywords were retrieved from 69657 published documents. After a critical analysis, we categorized them into different groups to show the trend in various domains. In the next phase of the study, only those documents were analyzed, which contained the phrase "sleep disorder" in the titles of the publications. Total 3626 documents were found. We calculated the per-year growth rate (GR). The continental distribution, the list of top twenty authors, sources/journals, departments or institutes, countries and research documents with highest citations are provided. By VOS viewer analysis, 6752, 36511 and 11473 terms in titles of the manuscripts, abstracts, and keywords were recorded, respectively. This may help in describing the overall trend in these publications. CONCLUSIONS: The present study provides a detailed list of top authors, departments, countries, sources, and top 20 most cited documents. The co-words analysis may help in describing the trends in the field of sleep disorders.