100 Years of the Journal of Dental Research: A Bibliometric Analysis

Since its inception in 1919, the Journal of Dental Research has continually published high-quality articles that span the breadth of research topics relevant to dentistry, oral surgery, and medicine. As part of the journal’s centennial celebration, we conducted an electronic search on Scopus to identify and analyze the top 100 most cited articles from 1919 to 2018. Since Scopus does not capture older citations, we conducted an additional analysis by Google Scholar to identify key articles published in the first 50 y of the journal. Based on Scopus, the articles were ranked in descending order per their citation counts. The citation counts of the 100 most cited articles varied from 262 to 1,503. The year in which the largest number of top 100 articles were published was 2004 ( n = 6). Within the top 100, the majority of articles originated from the United States ( n = 52). Research Reports–Biomaterials & Bioengineering was the most frequent category of cited articles ( n = 35). There was no significant association between total citation count and time since publication (correlation coefficient = –0.051, P = 0.656). However, there was a significant negative association of citation density (correlation coefficient = –0.610, P < 0.01) with time since publication. Our analyses demonstrate the broad reach of the journal and the dynamics in citation patterns and research agenda over its 100-y history. There is considerable evidence of the high variance in research output, when measured via citations, across the globe. Moreover, it remains unclear how patients’ priorities and dental health care needs are aligned with the perceived influence of single research pieces identified by our search. Our findings may help to inspire future research in tackling these inequalities and highlight the need for conceptualizing research priorities.

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Citation Metrics in Psychological Science

Perspectives on Psychological Science ◽

10.1177/1745691620964128 ◽

2021 ◽

pp. 174569162096412

Author(s):

Nina Radosic ◽

Ed Diener

Keyword(s):

Citation Count ◽

National Research Council ◽

The United States ◽

Early Career ◽

Faculty Members ◽

Psychological Science ◽

Enormous Variation ◽

Citation Counts ◽

Citation Metrics ◽

Number Of Citations

We present norms for faculty citation counts based on 811 faculty members at 30 PhD-granting psychology departments in the United States across the range of the National Research Council rankings. The metrics were highly skewed, with most scientists having a low to moderate number of citations of their work and a few scientists having extremely high numbers. However, the median per-year citation count was 149, showing widespread scientific contributions across scholars. Some individuals in lower ranked departments are more highly cited than the average scholar in higher ranked departments, with enormous variation in citation counts in both the low- and high-ranking departments. Citation counts overall have risen in recent years, and the citations of early-career scholars are increasing at a faster rate than their senior colleagues did at the same point in their careers. We found that citation counts at the beginning of scientists’ careers substantially predict lifetime citation success. Young scholars’ citation counts are associated with obtaining positions at higher ranked universities. Finally, we found no significant differences for subfields of psychology. In sum, although a few highly productive scientists have a very large influence, trends reveal that contributions to psychological science are growing over time, widespread, and not limited to a few stars and elite departments.

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Complexity In The Context of Palliative Care: A Scoping Review

10.21203/rs.3.rs-969011/v1 ◽

2021 ◽

Author(s):

Hironori Ohinata ◽

Maho Aoyama ◽

Mitsunori Miyashita

Keyword(s):

Palliative Care ◽

Scoping Review ◽

Healthcare Providers ◽

The United States ◽

Patient Specific ◽

Future Research ◽

Care Needs ◽

Living Situation ◽

Research Activities ◽

Specific Factors

Abstract Background: Understanding the factors of complexity of patients in palliative care is very important for healthcare providers in addressing the care needs of their patients. However, the healthcare providers’ perception of the factors of complexity in palliative care lacks a common understanding. This study aimed to determine the scope of research activities and specific factors of complexity in the context of palliative care.Methods: A scoping literature review was performed, following the methods described by the Joanna Briggs Institute. We conducted an electronic literature search in MEDLINE (Ovid), PsycINFO, Web of Science Core Collection, and CINAHL, examining literature from May 1972 to 2020.Results: We identified 32 peer-reviewed articles published in English before 2020. The target literature mainly originated in Europe and the United States. The research methods included quantitative studies (n=13), qualitative studies (n=12), case studies (n=3), and reviews (n=4). We reviewed 32 studies and summarized the factors of complexity into three levels: the patient’s level, the healthcare setting level, and the socio-cultural landscape level. We identified factors affecting patient-specific complexity, including sex, race, age, living situation, family burden, resources, treatment, decision-making, communication, prognosis, disease, and comorbidity/complexity. Other factors identified as contributing to patient complexity were the interaction of physical, psychological, social, and spiritual categories, as well as the healthcare providers’ confidence and skills, and the socio-cultural components.Conclusions: This scoping review shows specific factors of complexity and future challenges in the context of palliative care. Future research should include the factors of complexity identified in this review and conduct longitudinal studies on the interactions among them. In addition, it is necessary to examine specific complexity factors in patients from various social and ethnic backgrounds.

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The Political Science 400: With Citation Counts by Cohort, Gender, and Subfield

Political Science and Politics ◽

10.1017/s1049096518001786 ◽

2019 ◽

Vol 52 (2) ◽

pp. 296-311

Author(s):

Hannah June Kim ◽

Bernard Grofman

Keyword(s):

Political Science ◽

Citation Count ◽

The United States ◽

The Political ◽

Tenure Track ◽

Full List ◽

Online Appendix ◽

Women Scholars ◽

Citation Counts ◽

And Gender

ABSTRACTThis article updates the Masuoka, Grofman, and Feld 2002 dataset that identified the then-3,719 faculty in political science PhD-granting departments in the United States. That dataset contained information about each faculty member, including date and PhD-granting department, lifetime citation counts, fields of interest, and school of employment. We similarly create a database with the 4,089 currently tenured or tenure-track faculty, along with emeritus faculty, at US PhD-granting departments ca. 2017–2018. Using Google Scholar Profiles, along with manual counts for those who do not have a profile, we sort the dataset by citation count, PhD cohort, field of interest, and gender. This article identifies the 100 currently most-cited scholars, the 25 most-cited in each PhD cohort and subfield, the 40 most-cited women scholars, and the 25 most-cited emeriti. The full list of The Political Science 400 is available in an online appendix.

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Mapping Twenty Years of Antimicrobial Resistance Research Trends

10.1101/2021.03.01.433375 ◽

2021 ◽

Author(s):

Christian F Luz ◽

Magnus van Niekerk ◽

Julia Keizer ◽

Nienke Beerlage-de Jong ◽

Annemarie Braakman-Jansen ◽

...

Keyword(s):

Antimicrobial Resistance ◽

Research Output ◽

The United States ◽

Multidrug Resistant ◽

Future Research ◽

Topic Modelling ◽

African Region ◽

Comprehensive Overview ◽

Mdr Tb ◽

Global Threat

Background: Antimicrobial resistance (AMR) is a global threat to health and healthcare. In response to the growing AMR burden, research funding also increased. However, a comprehensive overview of the research output, including conceptual, temporal, and geographical trends, is missing. Therefore, this study uses topic modelling, a machine learning approach, to reveal the scientific evolution of AMR research and its trends, and provides an interactive user interface for further analyses. Methods: Structural topic modelling (STM) was applied on a text corpus resulting from a PubMed query comprising AMR articles (1999-2018). A topic network was established and topic trends were analysed by frequency, proportion, and importance over time and space. Findings: In total, 88 topics were identified in 158616 articles from 166 countries. AMR publications increased by 450% between 1999 and 2018, emphasizing the vibrancy of the field. Prominent topics in 2018 were Strategies for emerging resistances and diseases, Nanoparticles, and Stewardship. Emerging topics included Water and environment, and Sequencing. Geographical trends showed prominence of Multidrug-resistant tuberculosis (MDR-TB) in the WHO African Region, corresponding with the MDR-TB burden. China and India were growing contributors in recent years, following the United States of America as overall lead contributor. Interpretation: This study provides a comprehensive overview of the AMR research output thereby revealing the AMR research response to the increased AMR burden. Both the results and the publicly available interactive database serve as a base to inform and optimise future research.

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(231) Correlation of Cluster Number and Tendril Density in Grapevines

HortScience ◽

10.21273/hortsci.40.4.1008c ◽

2005 ◽

Vol 40 (4) ◽

pp. 1008C-1008

Author(s):

Peter Cousins

Keyword(s):

Correlation Coefficient ◽

The United States ◽

Indirect Selection ◽

Yield Component ◽

Cluster Number ◽

Density Correlation ◽

Primary Yield ◽

National Plant Germplasm System ◽

The Mean ◽

Selection For

The grapevine shoot has a zone in which leaf-opposed clusters are found at the nodes. Beyond the cluster zone, leaf-opposed tendrils are borne at the nodes in a patterned distribution. Cluster number is a primary yield component and selection programs for increasing yield in grapevine frequently consider cluster number. However, selection for increased cluster number requires direct observation, which is only possible once the vine matures. Clusters and tendrils are developmentally related, so it may be that tendril density (tendrils per node) reflects cluster number. In contrast to cluster number, tendril density can be observed on plants of all ages. The hypothesis that tendril density is related to cluster number was tested here. Cluster numbers and tendril density were assessed on 10 primary shoots each of 180 grapevine (Vitis) accessions. The accessions analyzed are cultivars and wild species collections held in the United States National Plant Germplasm System. The correlation coefficient of the number of clusters and tendril density was calculated using the means of 10 observations per accession. Tendril density was determined by calculating the mean number of tendrils per node in the nodes beyond the cluster zone. Cluster number and tendril density were positively correlated; the correlation coefficient was 0.35. This implies that vines with more tendrils per node also tend to have more clusters. The positive correlation of cluster number and tendril density has implications for grapevine improvement, pointing to the possibility of indirect selection for higher cluster number through selection for higher tendril density. Correlation between juvenile tendril density and mature cluster number is yet to be tested.

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Flow Research in Music Contexts: A Systematic Literature Review

Musicae Scientiae ◽

10.1177/1029864919877564 ◽

2019 ◽

pp. 102986491987756 ◽

Cited By ~ 4

Author(s):

Leonard Tan ◽

Hui Xing Sin

Keyword(s):

Research Output ◽

The United States ◽

Self Report ◽

Future Research ◽

Steady Increase ◽

Measurement Instruments ◽

Publication Type ◽

Qualitative Approaches ◽

Meta Analyses ◽

Flow Experiences

The purpose of this study was to review flow research in music contexts from 1975 until the first quarter of 2019. Specifically, frequencies/percentages were calculated for (a) output in five-year periods; (b) publication type; and (c) methodologies employed, including measurement instruments used. Content analyses were also conducted on topics covered. Using the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) methodology, a total of 3,341 records were examined, with 95 studies eventually included in the analysis. Findings indicated a steady increase in research output over the last 25 years. Studies overwhelmingly sampled participants from Western populations, especially the United States. The majority of quantitative studies used self-report questionnaires, of which those developed by Jackson and colleagues were most prevalent. Among the qualitative approaches, interviews and observations were the most common means of data collection. Topics covered in the studies reviewed include the psychophysiological aspects of flow, transmission and group experience of flow, the association of flow with a range of positive outcomes, factors that contribute to flow experiences, and flow experiences of young children. Implications for future research were proffered in light of the findings.

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A PubMed-Based Exploration of the Course of Yoga Research from 1948 to 2020

International Journal of Yoga Therapy ◽

10.17761/2021-d-21-00017 ◽

2021 ◽

Author(s):

Dipak Chetry ◽

Shirley Telles ◽

Acharya Balkrishna

Keyword(s):

United States ◽

United Kingdom ◽

Research Output ◽

Publishing Research ◽

The United States ◽

Time Frame ◽

Health Conditions ◽

Future Research ◽

The United Kingdom ◽

Meta Analyses

Yoga research citations from 1948 to 2020 in PubMed were filtered and sorted in 10-year intervals to explore the occurrence and time frame of change in (1) the focus of research; (2) the number of randomized controlled trials (RCTs), systematic reviews (SRs), and meta-analyses (MAs); (3) health conditions researched for yoga as therapy; (4) journals with yoga research; and (5) the research on yoga from different countries. Publications on yoga between 1948 and 1970 (1.25%) focused on exceptional abilities of experienced yoga practitioners, apparently related to the spiritual goal of yoga; from 1971 to 2000 (6.87%), the focus was on yoga in health and therapy; and from 2001 to 2020 (91.88%), research publications on yoga increased and continued to focus on health and therapy, with fewer RCTs relative to the SRs and MAs on yoga in PubMed. Publications on yoga reported the following health conditions most often: from 1981 to 1990, (1) asthma, (2) stress, and (3) diabetes; from 1991 to 2000, (1) stress followed by (2) asthma, anxiety, and pain (all three with equal percentages); from 2001 to 2010, (1) depression, (2) stress, and (3) anxiety; and from 2011 to 2020, (1) stress, (2) depression, and (3) pain. The journals publishing research on yoga in PubMed have changed between 1971 and 2020 as follows: highly clinically relevant, broad-interest medical journals (1971 to 1990); journals relevant to mind-body interventions (1991 to 2000); and specialized journals for complementary and alternative medicine, particular branches of medicine, or research study designs (2001 to 2020). The highest yoga research output from 1971 to 1980 came from the United Kingdom (RCTs); from 1981 to 1990 the most research came from the United States (RCTs); from 1991 to 2000 the most research came from India (RCTs) and the United Kingdom (SRs); from 2001 to 2010 the most research came from the United States (RCTs, SRs) and the United Kingdom (MAs); and from 2011 to 2020 the most research came from the United States (RCTs, SRs, MAs). The trends in yoga research from this analysis reflect increased research related to yoga and health while suggesting areas for future research based on the strengths and gaps that have emerged.

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Psycho-Oncology: A Bibliometric Review of the 100 Most-Cited Articles

Healthcare ◽

10.3390/healthcare9081008 ◽

2021 ◽

Vol 9 (8) ◽

pp. 1008

Author(s):

Susan Fox ◽

Julie Lynch ◽

Paul D’Alton ◽

Alan Carr

Keyword(s):

Citation Count ◽

The United States ◽

Observational Research ◽

Future Research ◽

Journal Articles ◽

Oncology Research ◽

Research Population ◽

Bibliometric Review ◽

Study Designs ◽

Number Of Citations

(1) Background: A bibliometric review of psycho-oncology research is overdue. (2) Methods: The 100 most-cited journal articles were compiled and ranked according to Scopus. (3) Results: The total citation count for the results ranged from 488–8509 (Mean = 940.27; SD = 1015.69). A significant correlation was found between years since publication and number of citations (p = 0.039). The majority of research originated from the United States (66%). The vast majority of research publications were original articles (80%). Observational research study designs represented the majority of studies (37%). Mixed cancer population research studies represented the largest cancer research population (36%). Positive psychology topics represented the most prolific proportion of studies (30%). Findings were reported in line with PRISMA-ScR guidelines. (4) Conclusions: This analysis offers a comprehensive account of seminal journal articles in psycho-oncology, identifying landmark contributions and areas for future research developments within the field, namely highlighting a need for more RCT studies. This analysis serves as an educational tool for interdisciplinary researchers and clinicians to support compassionate cancer care.

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The Pandemic Year 2020: World Map of Coronavirus Research (Preprint)

10.2196/preprints.30692 ◽

2021 ◽

Author(s):

Doris Klingelhöfer ◽

Markus Braun ◽

Dörthe Brüggmann ◽

David A Groneberg

Keyword(s):

Low Income ◽

Research Output ◽

Publication Output ◽

The United States ◽

Research Strategy ◽

Low Income Countries ◽

Future Research ◽

Visualization Technique ◽

Density Equalizing Mapping ◽

To Come

BACKGROUND SARS-CoV-2 is one of the most threatening pandemics in human history. As of the date of this analysis, it had claimed about 2 million lives worldwide, and the number is rising sharply. Governments, societies, and scientists are equally challenged under this burden. OBJECTIVE This study aimed to map global coronavirus research in 2020 according to various influencing factors to highlight incentives or necessities for further research. METHODS The application of established and advanced bibliometric methods combined with the visualization technique of density-equalizing mapping provided a global picture of incentives and efforts on coronavirus research in 2020. Countries’ funding patterns and their epidemiological and socioeconomic characteristics as well as their publication performance data were included. RESULTS Research output exploded in 2020 with momentum, including citation and networking parameters. China and the United States were the countries with the highest publication performance. Globally, however, publication output correlated significantly with COVID-19 cases. Research funding has also increased immensely. CONCLUSIONS Nonetheless, the abrupt decline in publication efforts following previous coronavirus epidemics should demonstrate to global researchers that they should not lose interest even after containment, as the next epidemiological challenge is certain to come. Validated reporting worldwide and the inclusion of low-income countries are additionally important for a successful future research strategy.

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Refining Evidence-Based Treatments for Late-Life Depression

GeroPsych ◽

10.1024/1662-9647/a000127 ◽

2015 ◽

Vol 28 (2) ◽

pp. 67-76

Author(s):

Grace C. Niu ◽

Patricia A. Arean

Keyword(s):

Older Adults ◽

Mental Illness ◽

Brain Plasticity ◽

Late Life ◽

Aging Population ◽

The United States ◽

Future Research ◽

Evidence Based ◽

Late Life Depression ◽

Evidence Based Treatments

The recent increase in the aging population, specifically in the United States, has raised concerns regarding treatment for mental illness among older adults. Late-life depression (LLD) is a complex condition that has become widespread among the aging population. Despite the availability of behavioral interventions and psychotherapies, few depressed older adults actually receive treatment. In this paper we review the research on refining treatments for LLD. We first identify evidence-based treatments (EBTs) for LLD and the problems associated with efficacy and dissemination, then review approaches to conceptualizing mental illness, specifically concepts related to brain plasticity and the Research Domain Criteria (RDoc). Finally, we introduce ENGAGE as a streamlined treatment for LLD and discuss implications for future research.

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