We searched PVS-related literature in the Web of Science Core Collection database,extracted and analyzed the data using the Science Citation Index Extended Edition,and included two types of literature:review and monog...We searched PVS-related literature in the Web of Science Core Collection database,extracted and analyzed the data using the Science Citation Index Extended Edition,and included two types of literature:review and monograph.The search terms were subject=persistent vegetative state and publication year(2001-2021)and language=English.Statistical analysis of literature overview,countries and regions,institutions,authors,literature source publications,literature research direction,citation frequency,impact factor,H-index and keywords,etc.are carried out.Use VOS viewer 1.6.17 software to visually cluster the keywords in the titles and abstracts of the included literature and analyze the research direction and development trend.A total of 772 PVS-related documents published in the core collection database of Web of Science from 2001 to 2021 were included.The country with the largest number of publications was the United States(261 papers,33.80%),and the institution with the largest number of publications was the University of Liège,Belgium(40 papers,5.18%).The author with the largest number of published papers is Laureys S of the University of Liège,Belgium(39 papers,5.05%).The research directions of PVS are mainly neuroscience(350 articles,45.33%),rehabilitation(98 articles,12.69%),and internal medicine(9 articles,11.79%).The literature is mainly from Brain Injury.The annual average impact factor of the top 10 journals in 2020 was 4.55,and their publication volume accounted for 17.35%(134/772)of the total literature.The 772 articles were cited 23,503 times(21,400 self-citations were excluded),with an average of 30.44 citations per article.The H-index of the United States,the United Kingdom and Belgium are 48,27 and 27,which are significantly higher than other countries,and the citation frequencies are 8609,3451 and 3270,accounting for 36.60%,14.68%and 13.90%of the total citations,respectively.China's publication volume is in the middle,but only 8th in citation frequency and H-index(818 citations,H-index 16).We used the VOS viewer software to analyze and found that the keywords were mainly concentrated in four groups:"diagnosis-related","treatment-related","prognosis-related"and"disease-related".From 2001 to 2021,the United States,Italy and the United Kingdom have the largest number of PVS related literature publications.There is still a certain gap between China and western countries in terms of the number and quality of literature publications.展开更多
文摘We searched PVS-related literature in the Web of Science Core Collection database,extracted and analyzed the data using the Science Citation Index Extended Edition,and included two types of literature:review and monograph.The search terms were subject=persistent vegetative state and publication year(2001-2021)and language=English.Statistical analysis of literature overview,countries and regions,institutions,authors,literature source publications,literature research direction,citation frequency,impact factor,H-index and keywords,etc.are carried out.Use VOS viewer 1.6.17 software to visually cluster the keywords in the titles and abstracts of the included literature and analyze the research direction and development trend.A total of 772 PVS-related documents published in the core collection database of Web of Science from 2001 to 2021 were included.The country with the largest number of publications was the United States(261 papers,33.80%),and the institution with the largest number of publications was the University of Liège,Belgium(40 papers,5.18%).The author with the largest number of published papers is Laureys S of the University of Liège,Belgium(39 papers,5.05%).The research directions of PVS are mainly neuroscience(350 articles,45.33%),rehabilitation(98 articles,12.69%),and internal medicine(9 articles,11.79%).The literature is mainly from Brain Injury.The annual average impact factor of the top 10 journals in 2020 was 4.55,and their publication volume accounted for 17.35%(134/772)of the total literature.The 772 articles were cited 23,503 times(21,400 self-citations were excluded),with an average of 30.44 citations per article.The H-index of the United States,the United Kingdom and Belgium are 48,27 and 27,which are significantly higher than other countries,and the citation frequencies are 8609,3451 and 3270,accounting for 36.60%,14.68%and 13.90%of the total citations,respectively.China's publication volume is in the middle,but only 8th in citation frequency and H-index(818 citations,H-index 16).We used the VOS viewer software to analyze and found that the keywords were mainly concentrated in four groups:"diagnosis-related","treatment-related","prognosis-related"and"disease-related".From 2001 to 2021,the United States,Italy and the United Kingdom have the largest number of PVS related literature publications.There is still a certain gap between China and western countries in terms of the number and quality of literature publications.
