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This paper presents a bibliometric analysis of the literature in the field of Physical Medicine and Rehabilitation. The records as indexed in the field of Physical Medicine and Rehabilitation in MEDLINE data covered in PubMed for the period 2010-2019 considered. It is observed that a total of 49613 records are in the MEDLINE data covered by Pubmed. It is found that the maximum number of 8098 records was published in the year 2019. It was also found that 42.69% are journal articles. It is seen from this study that RGR has been decreasing trend and the Doubling Time (Dt) has shown an increasing trend throughout the study period except for the years 2014. It is found that 50 core journals grouped in zone-1 published 7068 journal articles accounting for one-third of the total output. Similarly, the second zone comprises of 310 journals published 7189 journal articles and 1267 journals published 6922 journal articles grouped in the third zone. A total of 360 journals are identified as core journals in the field of Physical Medicine and Rehabilitation. The United States is dominating and ranked in the first position contains 121 core journals, England contributes 80 core journals in the second position, the Netherlands contributes 25 core journals in the third position, Germany contributes 24 core journals in the fourth position, Switzerland contributes 18 core journals in the fifth position, etc.

This paper helps a bibliometric analysis of the authorship pattern and collaborative research in the field of Laparoscopic Surgery literature in the MEDLINE database which covered in PubMed throughout the years i.e. 2010 to 2019. The maximum number of 9118 publications was published in the year 2019. A total of 94.97% of publications are covered by multi-authors’ papers. The ratio of single and multi-authors’ contributions is 1:20 in the field of Laparoscopic Surgery. The year-wise Degree of Collaboration shows the ratio in-between 0.92 to 0.97 in the field of Laparoscopic Surgery. The study exposed that the multi-authors’ papers are dominated in the field of Laparoscopic Surgery. The value of CAI for single-author papers was higher in the first block and declined in the second block in Laparoscopic Surgery literature. In the contrast, the CAI for more than two authors’ papers was lower in the first block and enhanced in the second block period in Laparoscopic Surgery literature. This result shows that the teamwork in Laparoscopic Surgery research is in an increasing trend in recent years. The average CC has been arrived at 0.62 which also indicates large share of publications was by multiple authors.

This paper presents the primary journals in the field of Pediatric Dentistry. The analysis is based on a bibliometric technique i.e. Bradford’s law. The records in the literature in the field of Pediatric Dentistry as indexed in the MEDLINE data covered in PubMed for the period from the year 2000 to 2019 considered for this study. It is found from the study that there are 19037 numbers of records as indexed in the above-said database in the area of Pediatric Dentistry. It was found that 57.25% of publication type is journal articles, 17.83% of publication type is Research Support, Non U.S. Gov't, 7.66% of publication type is Review, and Randomized Controlled Trial of publication type is 3.53%. The literature published as other publication types are 13.73%. The result shows that only thirteen journals fell into zone-1 and published 3671 journal articles, zone-2 consist of 80 journals and published 3666 journal articles, while 93.25% of the journals cited fell in zone-3 and published 3561 journal articles. A total of 93 journals were identified as primary journals in the field of Pediatric Dentistry. The United States published 28 primary journals out of 93 primary journals in the first position; followed by England published 22 primary journals, India published 7 primary journals, Germany published 5 primary journals, and also remaining countries in the study of primary journals analysis published below 4 to 1 primary journal.

This paper presents a bibliometric analysis of the literature in the field of Coronavirus in MEDLINE data which has been covered in PubMed. The study period has been selected from the year 2000 to 2019. It is noticed that 10700 records available in the field of Coronavirus. It has been found that 41.71% of records are Research Support, Non U.S. Gov't, and 30.18% are Journal Articles. The United States is the major publisher in the field of Coronavirus followed by England, Netherlands, China, etc. It shows that 95.14% of the total records were in the English language. Relative Growth Rate (RGR) has been decreased and Doubling time (Dt) has been increased from the year 2001 to 2019 but in an inconsistent manner. It has been noticed that 24 journals grouped in zone-1. Similarly, the second zone contains 120 journals and 697 journals grouped in the third zone. There are 144 journals that have been identified as core journals in the field of Coronavirus. It has been shown that the United States published 49 core journals in the first position followed by England, Netherlands, China, Korea (South), etc.

This paper presents a metric analysis of Community Health Nursing, the records published during the year 1999 to 2018 in the MEDLINE data which are covered in the Pubmed. It is noticed that from 1999 onwards there is a gradual increase except for some years and also observed that a total of 39140 records in the field of Community Health Nursing. It was found that 51.78% was journal articles, 21.79% was Research Support, Non U.S. Gov't and 9.07% was Review. English language (95.56%)is dominated in almost all the countries irrespective of the native language of the country. This is followed by French (0.91%) and Japanese (0.89%) as second and third positions respectively.It is seen that the United States is the major publisher, followed by England,Australia, Netherlands, etc. In total productivity, India ranks in the 11th position. 221 journals are identified as primary journals in the field of Community Health Nursing. It also shows that the United States published 42.53% out of 221 journals followed by England published 24.89% in the second position. Australia and Canada are in the third and fourth positions respectively. Activity Index is greater than 100 in the study period of seven years out of twenty years, which reveals that those years higher activity of Community Health Nursing research than the World’s average.

Presents an analysis of the literature in the field of Spinal Cord Injury as indexed the MEDLINE database in the Pubmed for the period 2008 to the 2017. It is noticed that the total of 28303 records on the literature of Spinal Cord Injury is covered. It is also noticed that the maximum number of records was published during year 2017. It was observed that the Journal Article consists of 41.73% and other publication types with different percentages. English language forming 95.07% of the total and other languages follows with minimum records. The United States has contributed the highest number of records in the study. 29 primary journals grouped in zone-1 published 3941 journal articles, the second zone comprises of 238 journals published 4031 journal articles and 1790 journals grouped in the third zone published 3840 journal articles. Of the 29 Journals in zone-1, twelve journals are published in the United States and followed by other countries. In zone-1 & 2; out of 267 journals, 37.45% frequently cited journals are the United States and India contributed eight journals.

This paper presents an analysis of Sub-Fields and Countries in the literature of Gout using bibliometric techniques. The literature covered in the database for the period 2008-2017 was considered. It shows that there is a growth of literature in the subject of study by year after year. 40.44% records were covered by Journal Article. 51 journals were needed to supply one-third of the cited records for zone-1. However, 223 journals were required to produce the second grouping of records in Zone-2, and 725 journals to yield the records that constitute Zone-3. Most frequently cited primary journals were General Medicine in the field of Gout with 40.51%. The United States is dominating the first position with 93 primary journals, England is in the second position contains 59 primary journals and Germany is in the third position contains 19 primary journals. The data reveals that publications on ‘General Medicine’ have resulted in a higher number of primary journals publications followed by Rheumatology, Pharmacology, Orthopedics, and Biochemistry. There were high priorities in 11 sub-fields in the USA followed by 10 in England and 8 in Germany. In other countries, the high priorities range from one discipline to five disciplines. 274 primary journals were identified in the field of Gout literature.

Bibliometric techniques were applied to analyze the authorship trend in the “Clay Research” during the period of 2007-2016. A total of 83 articles and 303 authors in the journal were examined by research article contributions by year and issue, authorship patterns by year and volume, authorship patterns, author’s productivity, most prolific authors, ranking by authors, contribution by institutions, authorship by country and degree of author collaboration. The average number of authors per paper is 3.650 and the average productivity per author is 0.273. The average degree of author collaboration is 0.891 during the period under study. The majority 294(97.029%) of the papers have been written in joint authorship.

This paper analysis a literature of Dengue using bibliometric techniques, the records published during the year 2008 to 2017 in the MEDLINE data, which are covered by Pubmed. On the whole, it is observed that from 2008 onwards there is a gradual increase in research on Dengue. It was examined that 41.4% data are journal articles. It was also studied that United States is the major producer, followed by England and Netherlands in the area of Dengue literature. The literary production is observed in almost all the major countries covered. India has been ranked in the 4th position. 94.8% of the research output covered in English language and followed by Spanish, Portuguese and French. The Relative Growth Rate (RGR) has been decreased from 0.75 to 0.14 and the Doubling Time (Dt) increases from 0.92 to 5.02 in the study period. Indian efforts in Dengue research are greater in three years out of ten years of study, since the Activity Index is higher than 100, in those three years, which reflects higher activity of Dengue research than the World’s average.

Presents a bibliometric analysis of the literature in the field of Dengue as indexed the MEDLINE data which covered in the Pubmed for the period 2008 to 2017. It is noticed that total of 11826 records on literature of Dengue are covered for a period of ten years from 2008 to 2017. It is also noticed that the maximum number of records (1810) was published during year 2016, followed by 1540 in 2017 and 1520 in 2015. It was found that Journal Article (41.4%), Research Support, Non-U.S. Gov’t (33.81%), Review (10.69%), Letter (3.61%), and Research Support, U.S. Gov't Non-P.H.S. (2.86%). 37 primary journals grouped in zone 1 published 1675 articles accounting for one third of the total output. Similarly the second zone comprises of 143 journals and 904 journals grouped in third zone. Of the 37 titles in zone-1, 12 are associated with United States and followed by England (9), Netherlands (5), India (4), Brazil (2), China (1), Germany (1), Japan (1), Sweden (1) and Thailand (1). In zone-1 & 2 ; out of 180 journals, 51 frequently cited journals are United States, this is followed by the countries i.e. England (33), India (19), Netherlands (11), Brazil (9), Switzerland (9), France (6), Japan (4), China (3), Egypt (3), Germany (3), Pakistan (3), Singapore (3), Colombia (2), Italy (2), Malaysia (2), Thailand (2), Argentina (1), Australia(1), Austria (1), Canada (1), Chile (1), Cuba (1), Indonesia (1), Iran (1), Jamaica (1), Mexico (1), Peru (1), Philippines (1), Poland (1), Sri Lanka (1) and Sweden (1).

This paper presents a bibliometric study of Astrobiology during the period of 2012-2017. A total of 519 articles and 3048 authors in the journal were examined by year to ascertain authorship patterns, author productivity, and degree of collaboration. The average number of authors per paper is 5.872 % and the average productivity per author is 0.170%. The average degree of collaboration is 0.861, which clearly indicates its dominance upon multi authored contributions.

This paper presents a bibliometric analysis of the authorship pattern in the field of Ebola covered in the bibliographic database namely MEDLINE which covered in Pubmed for the period 1995-2014. MEDLINE covered the maximum of 2519 records during the study period i.e. 1995 to 2014. More than 52.75% of the total contributions represent collaborative research. The degree of collaboration has been arrived at 0.55.The value of Co-Authorship Index (CAI) for single author paper shows that the single author papers during first three blocks i.e. 1995-1999, 2000-2004 and 2005-2009 were below 100 which started increasing in the fourth block and the CAI was 128.73. This reveals that the single author papers were dominating in the recent years. Similarly, for two authored papers, during 2000-2004 and 2005-2009, the CAI was 135.33 and 133.79, and declined in other two blocks. The CAI for multi authored papers results shows that first three blocks i.e. 1995-1999, 2000-2004 and 2005-2009 were above 100 and in the fourth block it was below 100. This shows that multiple authored papers lower in recent years.

This article analyzed the various components of the articles published in the Journal of Biofuels from 2010 – 2016. Various quality aspects of the 106 research articles and 376 authors were examined by growth of contributions by year and issue, authorship patterns by year and volume, authorship patterns, author productivity, authorship patterns by global, most prolific contributors and degree of collaboration. The average number of authors per paper is 3.462 and the average productivity per author is 0.288. The average degree of collaboration is 0.933 during the period under study. The majority 99 (93.396%) of the total contributions represents collaborative research.

This paper presents the analysis of core journals and subject-wise coverage of journals in the field of Vascular Diseases in Children for the period from 2012 to 2016 in the MEDLINE data which are covered in the Pubmed. The purpose of this study is to ascertain the core journals and its subject-wise coverage of journals in the field of Vascular Diseases in Children. It is found that the maximum number of records (6223) was published during the year 2015. The majority of the records were journal articles. 43 journals grouped in zone-1 published 4122 journal articles. In the second zone comprises of 263 journals published 4253 journal articles and 1749 journals published 3964 journal articles grouped in third zone. In zone-1, 15 journals are associated with Pediatrics, 8 with Cardiology, 4 with Cardiovascular Surgery, 3 with Neurology, 2 each with Neurosurgery, Surgery and Thoracic Surgery and 1 each with Dermatology, Genetics, Medicine, Nephrology, Oncology, Physiology and Radiology. In zone-2; 68 are General Medicine out of 263 journals covered, 44 in Cardiology, 25 in Pediatrics, 18 in Radiology, 15 in Surgery, 11 in Neurology, 9 in Neurosurgery, 8 in Genetics, 7 each in Anesthesia, Hematology and Rheumatology, 4 each in Endocrinology, Ophthalmology and Physiology, 3 in Cardiovascular Surgery, 2 each in Dermatology, Nephrology, Nutrition, Orthopedics, Pathology, Perinatology, Public Health, Urology and Vascular Surgery and 1 each in Biochemistry, Cancer, Dentistry, Epidemiology, Forensic Medicine, Gastroenterology, Oncology, Otorhinolaryngology, Plastic Surgery, Respiratory Medicine and Thoracic Surgery. 306 journals have been identified as core journals in the field of Vascular Diseases in Children.

This paper presents the analysis of core journals and subject-wise coverage of journals in the field of Breast Cancer for the period 1965 to 2014 in the MEDLINE data which are covered in the Pubmed. The purpose of this study is to identify the core journals and its subject-wise coverage of journals in the discipline of Breast Cancer. The majority of the records were journal articles. In zone-1, 10 journals associated with Oncology, 3 journals are associated with Medicine, 2 with Surgery, one each with Nursing, Nutrition and Public Health. In zone-2; 47 journals are in Oncology subject out of 105 journals covered, 32 in Medicine, 8 in Public Health, 7 in Surgery, 3 in Pathology, 2 each in Epidemiology, Nursing and Radiology and 1 each in Biochemistry and Genetics. In zone-1 & 2 combined; 57 frequently cited journals are in Oncology subject out of 123 journals covered, 35 in Medicine, 9 each in Public Health and Surgery, 3 each in Nursing and Pathology, 2 each in Epidemiology and Radiology, 1 each in Biochemistry, Genetics and Nutrition. It shows that the most cited journals are Oncology subject. 123 journals are identified as core journals in the field of Breast Cancer.

This paper attempts to assess the literary output in the field of Leptospirosis productivity for the period 2006-2013. Statistical analysis has been carried out using SPSS and other relevant measures. It shows that the year wise distributions of Leptospirosis records are increasing year after year except the years 2008, 2009 and 2011. It shows that 88.76% articles are of English language and followed by Spanish and French languages. It is observed that USA has contributed the highest number of records in the study period. Next major contribution belongs to England, Netherlands and India. India has the 4th position among the countries. It shows that 42.77% (5033) of all the cited records were “journal articles”, 35.93% (4228) “Research Support, Non-U.S. Government”, 8.92% (1050) “Review”, 5.89% (693) “letter”, 3.03% (357) “Research Support etc. Relative Growth Rate (RGR) is decreasing from 2007 (0.75) to 2013 (0.17) in the span of 8 years and Doubling Time (DT) increases from 0.92 in the year 2007 to 4.00 in the year 2013 in the study period. The Activity Index (AI) for India was peak in 2006 (234.04) more than three times the Activity Index for the year 2010 (65.05).

This paper presents a bibliometric analysis of the literature output in the field of Hepatitis C covered in the Journal Viz., Gastroenterology. The literature covered in the Journal for the period 2006-2010 was considered. Citation Analysis was used for this study. Records covered in the citation from the year 1908 to 2010 were found. This study was aimed to examine quantitatively the growth of literature in the field of 'Hepatitis C’. There were 137 articles from the source journal during the study period and these articles had a total of 5132 cited items. 97.97 % of the citations were publications from journals; 0.7% of the cited items were books, including proceedings; and 1.33 % cited items were miscellaneous formats. The year wise calculation of RGR for output has shown decreasing trends up to 2009 and increasing trend in 2010. The DT increased from 2.23 in 2007 to 2.66 in 2009 and it has gone down to 1.69 in 2010. The year wise analysis of RGR for Citations in Hepatitis C Research is in fluctuation trend throughout the study period. The DT increased from 2.77 in 2007 and decreased in 2008 (1.99) and then increased in 2009 (3.32) and decreased in 2010 (1.86). So it also clearly shows the fluctuation trend. RGR of journal articles covered in citations in the field of Hepatitis C research output from 1908 to 2010. The RGR is in fluctuation trend through out the study period. Similarly the DT for journal articles covered in citations has shown fluctuation trend through out the study period. RGR for journal article pages covered in citation in the field of Hepatitis C Research in the study period is in fluctuation trends through out the study period. Similarly the DT also shows fluctuation trends through out the study period.