Introduction: the progress of science and technology has allowed the advancement of informatics equipment, connectivity and virtuality, giving rise to new technologies such as metaverses. Objective: to describe the trends in scientific output on the metaverse in Scopus and the Web of Science. Method: bibliometric study of articles published in Scopus and the Web of Science concerning the metaverse in the period 1995 - 2022. Search formulas were used to retrieve the articles. Productivity indicators were studied. Results: 76,82 % and 67,46 % of metaverse articles in Scopus and Web of Science respectively were published in the period 2020-2022. China and USA were identified as the most productive countries (Scopus: 17,82 % vs 16,17 %; Web Of Science: 19,69 % vs 17,81 %) and Sabancı Üniversitesi (n=28) and Chinese Academy of Sciences (n=26) as the most productive institutions. A predominance of original articles and articles in English was found; the most productive areas were Computer Science and Information Systems and the area of Engineering, Electrical and Electronics. In Scopus 37,38 % of the articles were found in open access and in WOS 40,21 %. Conclusions: the metaverse is an emerging area of research, with China and the United States as leaders. The papers published in this area are mainly in English, as the lingua franca of science, characterized by the predominance of original studies and in fields such as computer science and engineering.

Introduction: cancer is a disease caused by neoplastic cells that multiply uncontrollably, invading other tissues autonomously and at a distance. There are many types of cancer that can be prevented by avoiding certain risk factors. Objective: to describe the epidemiological behavior of patients with cancer diagnosis in Guantanamo province in 2019. Methods: an observational, descriptive and cross-sectional study was conducted in patients diagnosed with cancer in the province of Guantánamo, belonging to the country Cuba, during the year 2019. The universe was composed by the 1697 cases reported in that period. The variables age, sex, municipality and main location of the cancer were studied. The primary source of data was the Health Statistical Yearbook of Guantánamo Province. Results: it was observed that the age group older than 60 years had the highest incidence, with 1176 patients, which represents 69,29 %. The male sex was the most representative, with 870 patients, equivalent to 51,26 %. Prostate cancer was the most prevalent cancer in the male population, with 220 patients, representing 25,28 %. Conclusions: cancer is an important health problem for the Guantanamo population, especially in the age group over 60 years old. Male sex has a higher incidence, and prostate, breast and skin cancer are the most frequent in the population studied.

Introduction: the progress of science and technology has allowed the advancement of informatics equipment, connectivity and virtuality, giving rise to new technologies such as metaverses. Objective: to describe the trends in scientific output on the metaverse in Scopus and the Web of Science. Method: bibliometric study of articles published in Scopus and the Web of Science concerning the metaverse in the period 1995 - 2022. Search formulas were used to retrieve the articles. Productivity indicators were studied. Results: 76,82 % and 67,46 % of metaverse articles in Scopus and Web of Science respectively were published in the period 2020-2022. China and USA were identified as the most productive countries (Scopus: 17,82 % vs 16,17 %; Web Of Science: 19,69 % vs 17,81 %) and Sabancı Üniversitesi (n=28) and Chinese Academy of Sciences (n=26) as the most productive institutions. A predominance of original articles and articles in English was found; the most productive areas were Computer Science and Information Systems and the area of Engineering, Electrical and Electronics. In Scopus 37,38 % of the articles were found in open access and in WOS 40,21 %. Conclusions: the metaverse is an emerging area of research, with China and the United States as leaders. The papers published in this area are mainly in English, as the lingua franca of science, characterized by the predominance of original studies and in fields such as computer science and engineering.

Introduction: scientific publication in the field of neurology and neurosurgery plays an important role in the development of Cuban biomedical sciences, so it is necessary to study its research activity. Objective: to characterize the scientific output of the Cuban Journal of Neurology and Neurosurgery between 2017 and 2021. Method: bibliometric, descriptive and cross-sectional study of the articles published in the RCNNC between 2017 and 2021. The universe consisted of 96 articles. The Productivity Index and Price index were used. The data were analyzed using descriptive statistics. Results: original articles predominated (31,25 %); 100 % of the articles were written in Spanish. A total of 258 authors were reported, with a predominance of multiple authorship. The first author of 65,62 % of the articles was a man. The 74,60 % of the authors were small producers, with no reports of large research producers. The country with the highest number of signatories was Cuba (n=206) and the most productive institution was the International Center for Neurological Restoration (60 signatories). A total of 3 123 references were used, of which 2 529 were in English. The Price Index was between 0,00 and 0,45. Conclusions: original articles, written in Spanish and multi-authored, constituted the core of the journal's production. Male authors and small producers led the scientific output. There was a marked editorial and institutional endogamy. Bibliographic references in English were the most common, as well as a low Price Index.