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1.
Indian J Med Ethics ; IX(2): 94-100, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38755769

RESUMO

BACKGROUND: Evaluating publication trends in a research area helps assess organised scientific efforts in the particular academic field. This study aims to evaluate and compare trends in medical ethics publications in the Eastern Mediterranean Region (EMRO) countries. METHODS: A scoping review was conducted to identify publication trends of Iranian and EMRO medical ethicists. Databases were searched, including Web of Sciences, Scopus, and PubMed for English language articles, which were published by countries in the World Health Organization EMRO regions. Iranian articles were searched in Persian and English language databases. The search strategy for the bioethics filter created by the Kennedy Institute of Ethics. Duplicate entries, tertiary publications and grey literature were excluded. All retrieved articles were categorised into ten main groups. Citavi software® was used for categorising and extracting articles' information. RESULTS: A total of 1835 English and Persian articles were obtained. Most (1211, 66%) Iranian publications in medical ethics were in Persian, and the rest (624, 34%) were in English. Most (306, 64.42%) of the published English articles in the EMRO region were authored by Iranian scholars, followed by those from Saudi Arabia (52, 10.95%), Oman (40, 8.42%), Pakistan (28, 5.89%), Lebanon (13, 2.74%), and Egypt (12, 2.53%). CONCLUSION: The results of this study show that the trend of publication of EMRO countries, especially Iranian publications, is insufficient to respond to national demands in medical ethics. A concept map has been presented to determine research needs in medical ethics. Focusing on national and regional research potentials could synergistically affect medical ethics progress in the EMRO region.


Assuntos
Ética Médica , Irã (Geográfico) , Humanos , Editoração/ética , Editoração/estatística & dados numéricos , Editoração/tendências , Bibliometria , Região do Mediterrâneo , Oriente Médio , Publicações/ética , Publicações/estatística & dados numéricos , Publicações/tendências
2.
Nutrients ; 16(8)2024 Apr 10.
Artigo em Inglês | MEDLINE | ID: mdl-38674800

RESUMO

BACKGROUND: Eating disorders (EDs) present a growing concern due to their widespread occurrence and chronic course, the low access to evidence-based treatment, and the significant burden they place on the patients and society. This picture justifies intensive focus on the prevention of EDs. The current study provides the first bibliometric analysis of research on the prevention of EDs, focusing on trends and contributions, to prompt further prevention research. METHODS: We conducted a bibliometric analysis of publications on the prevention of EDs using the Web of Science database, from 1993 to 2023. Focusing on universal and selective prevention strategies, our study involved a rigorous selection process, narrowing down from 10,546 to 383 relevant papers through manual screening. The analysis utilized the "bibliometrix" R package (version 4.2.2) and Python (version 3.9.6) for data processing, with VOSviewer employed for mapping collaboration networks. RESULTS: Our analysis revealed a consistent annual growth rate of 10.85% in ED prevention research publications, with significant contributions from the "International Journal of Eating Disorders" and some notable authors. The United States emerged as the dominant contributor. The analysis also highlighted key trends, including a surge in publications between 2010 and 2017, and the role of major institutions in advancing research in this field. DISCUSSION: The increasing rate of publications on the prevention of EDs is encouraging. However, the actual number of studies on the prevention of EDs are limited, and the majority of this work is performed by a few research groups. Given the high concentration of publications within a few countries and research groups, increased funding, facilitation of prevention research on a wider scale, and engagement of more researchers and further collaboration are called for.


Assuntos
Bibliometria , Transtornos da Alimentação e da Ingestão de Alimentos , Humanos , Transtornos da Alimentação e da Ingestão de Alimentos/prevenção & controle , Publicações/estatística & dados numéricos , Publicações/tendências
3.
J Nurs Scholarsh ; 56(3): 466-477, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38140780

RESUMO

AIMS: To comprehend the current research hotspots and emerging trends in big data research within the global nursing domain. DESIGN: Bibliometric analysis. METHODS: The quality articles for analysis indexed by the science core collection were obtained from the Web of Science database as of February 10, 2023.The descriptive, visual analysis and text mining were realized by CiteSpace and VOSviewer. RESULTS: The research on big data in the nursing field has experienced steady growth over the past decade. A total of 45 core authors and 17 core journals around the world have contributed to this field. The author's keyword analysis has revealed five distinct clusters of research focus. These encompass machine/deep learning and artificial intelligence, natural language processing, big data analytics and data science, IoT and cloud computing, and the development of prediction models through data mining. Furthermore, a comparative examination was conducted with data spanning from 1980 to 2016, and an extended analysis was performed covering the years from 1980 to 2019. This bibliometric mapping comparison allowed for the identification of prevailing research trends and the pinpointing of potential future research hotspots within the field. CONCLUSIONS: The fusion of data mining and nursing research has steadily advanced and become more refined over time. Technologically, it has expanded from initial natural language processing to encompass machine learning, deep learning, artificial intelligence, and data mining approach that amalgamates multiple technologies. Professionally, it has progressed from addressing patient safety and pressure ulcers to encompassing chronic diseases, critical care, emergency response, community and nursing home settings, and specific diseases (Cardiovascular diseases, diabetes, stroke, etc.). The convergence of IoT, cloud computing, fog computing, and big data processing has opened new avenues for research in geriatric nursing management and community care. However, a global imbalance exists in utilizing big data in nursing research, emphasizing the need to enhance data science literacy among clinical staff worldwide to advance this field. CLINICAL RELEVANCE: This study focused on the thematic trends and evolution of research on the big data in nursing research. Moreover, this study may contribute to the understanding of researchers, journals, and countries around the world and generate the possible collaborations of them to promote the development of big data in nursing science.


Assuntos
Bibliometria , Big Data , Pesquisa em Enfermagem , Humanos , Mineração de Dados , Publicações/estatística & dados numéricos , Publicações/tendências
4.
Artigo em Inglês | MEDLINE | ID: mdl-35886696

RESUMO

In response to global efforts to control and exterminate infectious diseases, this study aims to provide insight into the productivity of remdesivir research and highlight future directions. To achieve this, there is a need to summarize and curate evidence from the literature. As a result, this study carried out comprehensive scientific research to detect trends in published articles related to remdesivir using a bibliometric analysis. Keywords associated with remdesivir were used to access pertinent published articles using the Scopus database. A total of 5321 research documents were retrieved, primarily as novel research articles (n = 2440; 46%). The number of publications increased exponentially from 2020 up to the present. The papers published by the top 12 institutions focusing on remdesivir accounted for 25.69% of the overall number of articles. The USA ranked as the most productive country, with 906 documents (37.1%), equivalent to one-third of the global publications in this field. The most productive institution was Icahn School of Medicine, Mount Sinai, in the USA (103 publications). The New England Journal of Medicine was the most cited, with an h-index of 13. The publication of research on remdesivir has gained momentum in the past year. The importance of remdesivir suggests that it needs continued research to help global health organizations detect areas requiring instant action to implement suitable measures. Furthermore, this study offers evolving hotspots and valuable insights into the scientific advances in this field and provides scaling-up analysis and evidence diffusion on remdesivir.


Assuntos
Monofosfato de Adenosina , Alanina , Bibliometria , Monofosfato de Adenosina/análogos & derivados , Alanina/análogos & derivados , Bases de Dados Factuais , Eficiência , Saúde Global , Publicações/tendências
5.
PLoS Biol ; 20(2): e3001285, 2022 02.
Artigo em Inglês | MEDLINE | ID: mdl-35104285

RESUMO

Amid the Coronavirus Disease 2019 (COVID-19) pandemic, preprints in the biomedical sciences are being posted and accessed at unprecedented rates, drawing widespread attention from the general public, press, and policymakers for the first time. This phenomenon has sharpened long-standing questions about the reliability of information shared prior to journal peer review. Does the information shared in preprints typically withstand the scrutiny of peer review, or are conclusions likely to change in the version of record? We assessed preprints from bioRxiv and medRxiv that had been posted and subsequently published in a journal through April 30, 2020, representing the initial phase of the pandemic response. We utilised a combination of automatic and manual annotations to quantify how an article changed between the preprinted and published version. We found that the total number of figure panels and tables changed little between preprint and published articles. Moreover, the conclusions of 7.2% of non-COVID-19-related and 17.2% of COVID-19-related abstracts undergo a discrete change by the time of publication, but the majority of these changes do not qualitatively change the conclusions of the paper.


Assuntos
COVID-19/prevenção & controle , Disseminação de Informação/métodos , Revisão da Pesquisa por Pares/tendências , Publicações Periódicas como Assunto/tendências , Publicações/tendências , COVID-19/epidemiologia , COVID-19/virologia , Humanos , Pandemias/prevenção & controle , Revisão da Pesquisa por Pares/métodos , Revisão da Pesquisa por Pares/normas , Publicações Periódicas como Assunto/normas , Publicações Periódicas como Assunto/estatística & dados numéricos , Publicações/normas , Publicações/estatística & dados numéricos , Editoração/normas , Editoração/estatística & dados numéricos , Editoração/tendências , SARS-CoV-2/isolamento & purificação , SARS-CoV-2/fisiologia
6.
J Plast Reconstr Aesthet Surg ; 75(1): 439-488, 2022 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-34736850

RESUMO

The classic canonical publication trajectory for academicians has been well-described by a rapid increase followed by a slower decrease in productivity, leading to a plateau. This trajectory has not been investigated in plastic surgery. In this communication, we aimed to: (1) visualize the publication trajectory per decade for plastic surgeons certified from 1980 to 2010, and (2) characterize and quantify the changes in publishing trends across decades. A list of plastic and reconstructive surgeons board certified between 1980 and 2010 was obtained. Number of publications per year was recorded for each plastic surgeon. The median cumulative publication trajectory was graphed for each decade. Kruskal-Wallis analysis was performed to determine whether there were differences in number of publications across generations. The trajectory for a surgeon from the 1980s follows the established canonical trajectory. Surgeons from the 1990s and 2000s had significantly more publications by board certification than those from the 1980s (7 and 8 vs. 5, respectively, p < 0.01). Surgeons from the 2010s on average achieved 8 publications by board certification. It is clear that the publication arc for plastic surgeons from successive generations has greatly changed. Over the last 40 years, there has been a trend for increasing productivity and involvement in research at a much earlier stage in career, potentially due to increasing demands for matching into residency programs.


Assuntos
Internato e Residência , Procedimentos de Cirurgia Plástica , Publicações/estatística & dados numéricos , Cirurgiões , Cirurgia Plástica , Eficiência , Humanos , Publicações/tendências , Cirurgia Plástica/educação , Estados Unidos
7.
Dis Colon Rectum ; 65(3): 429-443, 2022 03 01.
Artigo em Inglês | MEDLINE | ID: mdl-34108364

RESUMO

BACKGROUND: A new bibliometric index called the disruption score was recently proposed to identify innovative and paradigm-changing publications. OBJECTIVE: The goal was to apply the disruption score to the colorectal surgery literature to provide the community with a repository of important research articles. DESIGN: This study is a bibliometric analysis. SETTINGS: The 100 most disruptive and developmental publications in Diseases of the Colon & Rectum, Colorectal Disease, International Journal of Colorectal Disease, and Techniques in Coloproctology were identified from a validated data set of disruption scores and linked with the iCite National Institutes of Health tool to obtain citation counts. MAIN OUTCOME MEASURES: The primary outcomes measured were the disruption score and citation count. RESULTS: We identified 12,127 articles published in Diseases of the Colon & Rectum (n = 8109), International Journal of Colorectal Disease (n = 1912), Colorectal Disease (n = 1751), and Techniques in Coloproctology (n = 355) between 1954 and 2014. Diseases of the Colon & Rectum had the most articles in the top 100 most disruptive and developmental lists. The disruptive articles were in the top 1% of the disruption score distribution in PubMed and were cited between 1 and 671 times. Being highly cited was weakly correlated with high disruption scores (r = 0.09). Developmental articles had disruption scores that were more strongly correlated with citation count (r = 0.18). LIMITATIONS: This study is subject to the limitations of bibliometric indices, which change over time. DISCUSSION: The disruption score identified insightful and paradigm-changing studies in colorectal surgery. These studies include a wide range of topics and consistently identified editorials and case reports/case series as important research. This bibliometric analysis provides colorectal surgeons with a unique archive of research that can often be overlooked but that may have scholarly significance. See Video Abstract at http://links.lww.com/DCR/B639.UN NUEVO INDICE BIBLIOMÉTRICO: LAS 100 MAS IMPORTANTES PUBLICACIONES EN INNOVACIONES DESESTABILIZADORAS Y DE DESARROLLO EN LAS REVISTAS DE CIRUGÍA COLORRECTALANTECEDENTES:Un nuevo índice bibliométrico llamado innovación desestabilizadora y de desarrollo ha sido propuesto para identificar publicaciones de vanguardia y que pueden romper paradigmas.OBJETIVO:La meta fué aplicar el índice de desestabilización a la literature en cirugía colorectal para aportar a la comunidad con un acervo importante de artículos de investigación.DISEÑO:Un análisis bibliométrico.PARAMETROS:Las 100 publicaciones mas desestabilizadores y de desarrollo en las revistas: Diseases of the Colon and Rectum, Colorectal Disease, International Journal of Colorectal Disease, y Techniques in Coloproctology se recuperaron de una base de datos validada con puntuaciones de desestabilización y se ligaron con la herramienta iCite NIH para obtener la cuantificación de citas.PRINCIPAL MEDIDA DE RESULTADO:El índice desestabilizador y la cuantificación de citas.RESULTADOS:Se identificaron 12,127 articulos publicados en Diseases of the Colon and Rectum (n = 8,109), International Journal of Colorectal Disease (n = 1,912), Colorectal Disease (n = 1,751), y Techniques in Coloproctology (n = 355) de 1954-2014. Diseases of the Colon and Rectum representó la mayoría de las publicaciones dentro de la lista de los 100 mas desestabilizadores y de desarrollo. Esta literatura desestabilizadora se encuentra en el principal 1% de la distribución de la puntuacón desestabilizadora en PubMed y se citaron de 1 a 671 veces. El ser citado con frecuencia se relacionó vagamente con las puntuaciones de desastibilización (r = 0.09). Los artículos de desarrollo tuvieron puntuaciones de desestabilización que estuvieron muy correlacionados con la cuantificación de las citas (r = 0.18).LIMITACIONES:Las sujetas a las limitaciones de los índices bibliométricos, que se modifican en el tiempo.DISCUSION:La putuación de desestabilicación identificó trabajos perspicaces, pragmáticos y modificadores de paradigmas en cirugía colorrectal. Es de interés identificar que se incluyeron una gran variedad de temas y en forma consistente editoriales, reportes de casos y series de casos que representaron una investigación importante. Este análisis bibliométrico aporta a los cirujanos colorrectales de un acervo de investigación único que puede con frecuencia pasarse por alto, y sin embargo tener una gran importancia académica. Consulte Video Resumen en http://links.lww.com/DCR/B639. (Traducción- Dr. Miguel Esquivel-Herrera).


Assuntos
Indexação e Redação de Resumos , Cirurgia Colorretal , Publicações , Indexação e Redação de Resumos/métodos , Indexação e Redação de Resumos/tendências , Bibliometria , Cirurgia Colorretal/educação , Cirurgia Colorretal/métodos , Cirurgia Colorretal/tendências , Humanos , Fator de Impacto de Revistas , Avaliação de Resultados em Cuidados de Saúde , Publicações Periódicas como Assunto , PubMed/estatística & dados numéricos , Publicações/estatística & dados numéricos , Publicações/tendências , Pesquisa
9.
J Med Chem ; 65(1): 84-99, 2022 01 13.
Artigo em Inglês | MEDLINE | ID: mdl-34928151

RESUMO

Fragment-based drug discovery (FBDD) continues to evolve and make an impact in the pharmaceutical sciences. We summarize successful fragment-to-lead studies that were published in 2020. Having systematically analyzed annual scientific outputs since 2015, we discuss trends and best practices in terms of fragment libraries, target proteins, screening technologies, hit-optimization strategies, and the properties of hit fragments and the leads resulting from them. As well as the tabulated Fragment-to-Lead (F2L) programs, our 2020 literature review identifies several trends and innovations that promise to further increase the success of FBDD. These include developing structurally novel screening fragments, improving fragment-screening technologies, using new computer-aided design and virtual screening approaches, and combining FBDD with other innovative drug-discovery technologies.


Assuntos
Química Farmacêutica/tendências , Desenho de Fármacos , Descoberta de Drogas/tendências , Publicações/tendências , Bibliotecas de Moléculas Pequenas/química , Bibliotecas de Moléculas Pequenas/farmacologia , Animais , Humanos
11.
Sci Rep ; 11(1): 15747, 2021 08 03.
Artigo em Inglês | MEDLINE | ID: mdl-34344904

RESUMO

Target identification and prioritisation are prominent first steps in modern drug discovery. Traditionally, individual scientists have used their expertise to manually interpret scientific literature and prioritise opportunities. However, increasing publication rates and the wider routine coverage of human genes by omic-scale research make it difficult to maintain meaningful overviews from which to identify promising new trends. Here we propose an automated yet flexible pipeline that identifies trends in the scientific corpus which align with the specific interests of a researcher and facilitate an initial prioritisation of opportunities. Using a procedure based on co-citation networks and machine learning, genes and diseases are first parsed from PubMed articles using a novel named entity recognition system together with publication date and supporting information. Then recurrent neural networks are trained to predict the publication dynamics of all human genes. For a user-defined therapeutic focus, genes generating more publications or citations are identified as high-interest targets. We also used topic detection routines to help understand why a gene is trendy and implement a system to propose the most prominent review articles for a potential target. This TrendyGenes pipeline detects emerging targets and pathways and provides a new way to explore the literature for individual researchers, pharmaceutical companies and funding agencies.


Assuntos
Academias e Institutos/tendências , Biomarcadores/metabolismo , Simulação por Computador , Doença/genética , Descoberta de Drogas/tendências , Terapia de Alvo Molecular , Publicações/tendências , Mineração de Dados , Regulação da Expressão Gênica , Predisposição Genética para Doença , Humanos , Aprendizado de Máquina , Redes Neurais de Computação
12.
Medicine (Baltimore) ; 100(33): e26984, 2021 Aug 20.
Artigo em Inglês | MEDLINE | ID: mdl-34414977

RESUMO

BACKGROUND: There are various treatments for facial nerve palsy, and research into this topic is ongoing. In the present study, we carried out bibliometric and visualized analyses to identify the trends of research into facial nerve palsy treatment. METHODS: To identify articles, the SCOPUS database was searched for articles published from its inception to December 27, 2020. The search was conducted twice, with Search 1 investigating general treatment trends and Search 2 narrowing the scope to complementary and alternative treatment. The extracted keywords were analyzed using the Visualization Of Similarities (VOS) viewer. Through analysis of keywords, research hotspots in the treatment of facial nerve palsy were identified. RESULTS: A total of 1609 and 223 articles were identified in Searches 1 and 2, respectively. The number of articles published each year showed a tendency to increase, and most of the studies were only conducted in a few countries. In terms of subject area, "medicine" was overwhelmingly the most common(77.6%). Based on the analysis of 316 keywords in Search1, "medication treatment," and "complementary and alternative treatment" were the hotspots of research. CONCLUSION: This study provides the overall trends of facial nerve palsy treatment. To date, research on medication treatment has been main focus, and antiviral use among medication treatment and complementary and alternative treatment has emerged in recent years.


Assuntos
Bibliometria , Doenças do Nervo Oculomotor/terapia , Publicações/estatística & dados numéricos , Nervo Facial/anormalidades , Nervo Facial/fisiopatologia , Humanos , Publicações/tendências
13.
Orthop Surg ; 13(6): 1922-1933, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-34423576

RESUMO

OBJECTIVE: To highlight the characteristics of the most highly cited articles and propose the research interests over the past decades in the field of femoroacetabular impingement (FAI) and labral tear. METHODS: The ISI Web of Science database (Clarivate Analytics, New York, the United States) was utilized for the identification of articles on 15 December 2020. FAI and labral tear-related articles (1138 articles) were retrieved, of which the 100 most-cited articles (top 100) were identified. Subsequent analysis included citation density (citations/article age), authorship, institution, journal, geographic distribution, level of evidence, and theme. RESULTS: The number of citations per article ranged from 66 to 1189 with a mean of 163.31. The majority of articles were published in the United States (all articles/top 100 = 655/57) and Switzerland (85/22). University of Bern (n = 10) was the most prolific institution. The journal with the most of articles was Arthroscopy: The Journal of Arthroscopic and Related Surgery. The most prolific coauthor (all articles) or first authors (top 100) was Domb (n = 109) and Philippon (n = 6), respectively. The evidence with the most articles is level IV (n = 41). The top three most popular topics of research article were outcomes of surgery (n = 23), imaging diagnosis (n = 18), and comparison of surgery (n = 8). The top four most prevalent themes of review were labral tears (n = 3), FAI (n = 3), comparison of surgery imaging diagnosis, and outcomes of surgery (both n = 2). Six keywords with the newest average publication year, including FAI syndrome (average publication year = 2019.50), patient-reported outcomes (2019.43), femoroplasty (2018.60), clinical outcomes (2018.17), borderline dysplasia (2018.00), and capsule (2018.00). Five keywords with the highest average citations, including outcome (average citations = 88.50), alpha angle (58.00), complications (55.86), revision hip arthroscopy (49.00), and systematic review (46.14). CONCLUSIONS: Outcomes research is the most popular research interest and patient-reported outcome instruments might be further and widely used in the emerging articles in the near future. The field of FAI and labral tear has shown an obvious trend of development and is steadily evolving. It could be predicted that there will be an increasing number of publications in the following years, with the United States and Switzerland maintaining leadership in this field.


Assuntos
Autoria , Cartilagem Articular/diagnóstico por imagem , Cartilagem Articular/cirurgia , Impacto Femoroacetabular/diagnóstico por imagem , Impacto Femoroacetabular/cirurgia , Publicações Periódicas como Assunto , Publicações/tendências , Bibliometria , Cartilagem Articular/lesões , Humanos , Medidas de Resultados Relatados pelo Paciente
16.
Nat Commun ; 12(1): 3429, 2021 06 08.
Artigo em Inglês | MEDLINE | ID: mdl-34103514

RESUMO

Neuroscience research in Africa remains sparse. Devising new policies to boost Africa's neuroscience landscape is imperative, but these must be based on accurate data on research outputs which is largely lacking. Such data must reflect the heterogeneity of research environments across the continent's 54 countries. Here, we analyse neuroscience publications affiliated with African institutions between 1996 and 2017. Of 12,326 PubMed indexed publications, 5,219 show clear evidence that the work was performed in Africa and led by African-based researchers - on average ~5 per country and year. From here, we extract information on journals and citations, funding, international coauthorships and techniques used. For reference, we also extract the same metrics from 220 randomly selected publications each from the UK, USA, Australia, Japan and Brazil. Our dataset provides insights into the current state of African neuroscience research in a global context.


Assuntos
Neurociências/tendências , Publicações/tendências , África , Autoria , Internacionalidade , Fator de Impacto de Revistas , Neurociências/economia , Apoio à Pesquisa como Assunto/economia
17.
Acta Orthop ; 92(5): 628-632, 2021 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-34139929

RESUMO

Background and purpose - The main purpose of arthroplasty registries is to collect information on patients, techniques, and devices to monitor and improve the outcome of the specific procedure. This study analyses the role played by registries in the orthopedic research community and describes publication trends, characteristics, and patterns of this field of research.Patients and methods - A descriptive-bibliometric review was conducted. Scopus was the database used for the research. All articles published from 1991 to December 2020 containing keywords related to registries and arthroplasty were considered. In particular, the following dimensions were analyzed in detail: (i) papers/year; (ii) journals; (iii) countries; (iv) research growth rate; (v) collaboration among countries. VOSviewer software was used to perform the bibliometric analysis. Finally, the 50 most cited papers of the last 10 years were briefly analyzed.Results - 3,933 articles were identified. There has been growing interest in the topic since 2010. Acta Orthopaedica ranked first for the number of articles published. The country with the largest number of articles citing registries was the United States, followed by the United Kingdom and Sweden. The relative number of articles per 100,000 inhabitants is 0.60 for Europe and 0.38 for the United States. The literature in this research area has an average yearly growth rate of 28%.Interpretation - The publication rate in the field of arthroplasty registries is constantly growing with a noteworthy impact in the evolution of this research and clinical area. The growth rate is significantly higher than that of arthroplasty literature (28% vs. 10%) and the collaboration among countries is strong and increasing with time.


Assuntos
Artroplastia , Bibliometria , Pesquisa Biomédica/tendências , Publicações/tendências , Sistema de Registros , Humanos
18.
J Clin Epidemiol ; 138: 1-11, 2021 10.
Artigo em Inglês | MEDLINE | ID: mdl-34091022

RESUMO

BACKGROUND: Systematic reviews (SRs) are useful tools in synthesising the available evidence, but high numbers of overlapping SRs are also discussed in the context of research waste. Although it is often claimed that the number of SRs being published is increasing steadily, there are no precise data on that. We aimed to assess trends in the epidemiology and reporting of published SRs over the last 20 years. METHODS: A retrospective observational study was conducted to identify potentially eligible SRs indexed in PubMed from 2000 to 2019. From all 572,871 records retrieved, we drew a simple random sample of 4,000. The PRISMA-P definition of SRs was applied to full texts and only SRs published in English were included. Characteristics were extracted by one reviewer, with a 20% sample verified by a second person. RESULTS: A total of 1,132 SRs published in 710 different journals were included. The estimated number of SRs indexed in 2000 was 1,432 (95% CI: 547-2,317), 5,013 (95% CI: 3,375-6,650) in 2010 and 29,073 (95% CI: 25,445-32,702) in 2019. Transparent reporting of key items increased over the years. About 7 out of 10 named their article a SR (2000-2004: 41.9% and 2015-2019: 74.4%). In 2000-2004, 32.3% of SRs were based in the UK (0% in China), in 2015-2019 24.0% were from China and 10.8% from the UK. Nearly all articles from China (94.9%) conducted a meta-analysis (overall: 58.9%). Cochrane reviews (n = 84; 7.4%) less often imposed language restrictions, but often did not report the number of records and full texts screened and did not name their article a SR (22.6% vs. 73.4%). CONCLUSIONS: We observed a more than 20-fold increase in the number of SRs indexed over the last 20 years. In 2019, this is equivalent to 80 SRs per day. Over time, SRs got more diverse in respect to journals, type of review, and country of corresponding authors. The high proportion of meta-analyses from China needs further investigation. STUDY REGISTRATION: Open Science Framework (https://osf.io/pxjrv/).


Assuntos
Pesquisa Biomédica/estatística & dados numéricos , Estudos Epidemiológicos , Metanálise como Assunto , Publicações/estatística & dados numéricos , Publicações/tendências , Relatório de Pesquisa/tendências , Revisões Sistemáticas como Assunto , Previsões , Humanos , Estudos Retrospectivos
20.
PLoS Biol ; 19(4): e3001162, 2021 04.
Artigo em Inglês | MEDLINE | ID: mdl-33872298

RESUMO

Many randomized controlled trials (RCTs) are biased and difficult to reproduce due to methodological flaws and poor reporting. There is increasing attention for responsible research practices and implementation of reporting guidelines, but whether these efforts have improved the methodological quality of RCTs (e.g., lower risk of bias) is unknown. We, therefore, mapped risk-of-bias trends over time in RCT publications in relation to journal and author characteristics. Meta-information of 176,620 RCTs published between 1966 and 2018 was extracted. The risk-of-bias probability (random sequence generation, allocation concealment, blinding of patients/personnel, and blinding of outcome assessment) was assessed using a risk-of-bias machine learning tool. This tool was simultaneously validated using 63,327 human risk-of-bias assessments obtained from 17,394 RCTs evaluated in the Cochrane Database of Systematic Reviews (CDSR). Moreover, RCT registration and CONSORT Statement reporting were assessed using automated searches. Publication characteristics included the number of authors, journal impact factor (JIF), and medical discipline. The annual number of published RCTs substantially increased over 4 decades, accompanied by increases in authors (5.2 to 7.8) and institutions (2.9 to 4.8). The risk of bias remained present in most RCTs but decreased over time for allocation concealment (63% to 51%), random sequence generation (57% to 36%), and blinding of outcome assessment (58% to 52%). Trial registration (37% to 47%) and the use of the CONSORT Statement (1% to 20%) also rapidly increased. In journals with a higher impact factor (>10), the risk of bias was consistently lower with higher levels of RCT registration and the use of the CONSORT Statement. Automated risk-of-bias predictions had accuracies above 70% for allocation concealment (70.7%), random sequence generation (72.1%), and blinding of patients/personnel (79.8%), but not for blinding of outcome assessment (62.7%). In conclusion, the likelihood of bias in RCTs has generally decreased over the last decades. This optimistic trend may be driven by increased knowledge augmented by mandatory trial registration and more stringent reporting guidelines and journal requirements. Nevertheless, relatively high probabilities of bias remain, particularly in journals with lower impact factors. This emphasizes that further improvement of RCT registration, conduct, and reporting is still urgently needed.


Assuntos
Publicações , Ensaios Clínicos Controlados Aleatórios como Assunto/métodos , Ensaios Clínicos Controlados Aleatórios como Assunto/estatística & dados numéricos , Viés , Bibliometria , Confiabilidade dos Dados , Gerenciamento de Dados/história , Gerenciamento de Dados/métodos , Gerenciamento de Dados/normas , Gerenciamento de Dados/tendências , Bases de Dados Bibliográficas/história , Bases de Dados Bibliográficas/normas , Bases de Dados Bibliográficas/tendências , História do Século XX , História do Século XXI , Humanos , Avaliação de Resultados em Cuidados de Saúde , Registros Públicos de Dados de Cuidados de Saúde , Publicações/história , Publicações/normas , Publicações/estatística & dados numéricos , Publicações/tendências , Melhoria de Qualidade/história , Melhoria de Qualidade/tendências , Ensaios Clínicos Controlados Aleatórios como Assunto/história , Revisões Sistemáticas como Assunto
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