An Analysis of the Citation Climate in Neurosurgical Literature and Description of an Interfield Citation Metric

Madhugiri, Venkatesh S; Sasidharan, Gopalakrishnan M; Subeikshanan, Venkatesan; Dutt, Akshat; Ambekar, Sudheer; Strom, Shane F.

doi:10.1227/neu.0000000000000656

Cited by 12 publications

(10 citation statements)

References 14 publications

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“…Similar to previous bibliometric analyses, [ 16 – 18 , 21 ] literature search was conducted in the database of Web of Science (WoS) (Thomson Reuters, New York) on November 15th, 2016. The keywords were “lumbar NEAR pain,” “back pain,” “dorsalgia,” “backache,” “lumbago,” “back NEAR disorder,” and “discitis.” The published time was limited from 1995 to 2016, without other restrictions.…”

Section: Methodsmentioning

confidence: 99%

“…As important indicators, the number of published articles and citation reports have been acknowledged and frequently used to assess worldwide research productivity. [ 13 – 16 ] Bibliometric analysis was an important tool to measure scientific outputs of an individual, institution or country using relevant parameters including the number of published articles and citation of published articles. [ 17 , 18 ] Besides, bibliometric analyses could roughly investigate the trend of one specific topic and were frequently used in biomedical fields.…”

Section: Introductionmentioning

confidence: 99%

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Worldwide research productivity in the field of back pain

Wang

Zhao

2018

Medicine

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Background:This study aimed to show the world research productivity in the field of back pain and to help researchers follow the scientific development and promote the cooperation in this field.Methods:Web of Science (WoS) database was searched from 1995 to 2016 without other restrictions. The keywords were as follows: “lumbar NEAR pain,” “back pain,” “dorsalgia,” “backache,” “lumbago,” “back NEAR disorder,” and “discitis.” The following information of retrieved articles was analyzed: countries/territories, journals, publication year, authors, citation reports, and institutions. Publication activity was further adjusted for countries by gross domestic product (GDP) and population size.Results:A total of 50,970 articles were retrieved in WoS database from 1995 to 2016. The United States published the biggest number of articles (16,818, 33.00%), followed by England (4,582, 8.99%), Germany (3,871, 7.60%), Canada (3,613, 7.09%), and Australia (3,063, 6.01%). Sweden ranked the first after adjusted for publication, and Netherlands ranked the first after adjusted for GDP. Besides, there was positive correlation between total number of publications and GDP for each country (P < .05). Harvard University was the most productive institution (917, 1.80%), Maher CG was the most productive author (229, 0.45%) and Spine was the most popular journal (3605, 7.07%) in the field of back pain research. Moreover, the article titled “Clinical importance of changes in chronic pain intensity measured on an 11-point numerical pain rating scale” in Pain had the highest citations (1749).Conclusion:There was a significant increase in annual publications concerning back pain research worldwide. The total number of publications was positively associated with GDP in main productive countries. The United States was the most productive country, Harvard University was the most productive institution, Maher CG was the most productive author and Spine was the most popular journal in the field of back pain.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Worldwide research productivity in the field of back pain

Wang

Zhao

2018

Medicine

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“…Madhugiri et al demonstrated that the time for neurosurgical articles to peak in citations is about 6.25 years after publication. 19 Therefore, later articles in the discrete publication collection time period do not have adequate time to accumulate citations. We felt that adding approximately 18 months was a fair compromise that allowed us to present a metric that encompassed a contemporary time frame and also allowed later articles in the discrete time frame to accumulate citations so as to more adequately reflect the impact or interest generated by that article.…”

Section: Methodsmentioning

confidence: 99%

“…Moreover, it has also been demonstrated that the time to peak citation does not differ between articles in neurosurgical journals compared with those in nonneurosurgical high-impact journals, so there should be no bias in our methodology against either. 19 The second methodological improvement was to directly contact every program to obtain faculty affiliations for each year in the discrete time frame. Previously, faculty names were collected from program websites.…”

Section: Methodsmentioning

confidence: 99%

Taking the next step in publication productivity analysis in pediatric neurosurgery

Lee

Xu²,

Dave

et al. 2018

Journal of Neurosurgery: Pediatrics

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OBJECTIVEThere has been an increasing interest in the quantitative analysis of publishing within the field of neurosurgery at the individual, group, and institutional levels. The authors present an updated analysis of accredited pediatric neurosurgery training programs.METHODSAll 28 Accreditation Council for Pediatric Neurosurgery Fellowship programs were contacted for the names of pediatric neurosurgeons who were present each year from 2011 through 2015. Faculty names were queried in Scopus for publications and citations during this time period. The 5-year institutional Hirsch index [ih(5)-index] and revised 5-year institutional h-index [ir(5)-index] were calculated to rank programs. Each publication was reviewed to determine authorship value, tier of research, clinical versus basic science research, subject matter, and whether it was pediatrics-specific. A unique 3-tier article classification system was introduced to stratify clinical articles by quality and complexity, with tier 3 being the lowest tier of publication (e.g., case reports) and tier 1 being the highest (e.g., randomized controlled trials).RESULTSAmong 2060 unique publications, 1378 (67%) were pediatrics-specific. The pediatrics-specific articles had a mean of 15.2 citations per publication (median 6), whereas the non–pediatrics-specific articles had a mean of 23.0 citations per publication (median 8; p < 0.0001). For the 46% of papers that had a pediatric neurosurgeon as first or last author, the mean number of citations per publication was 12.1 (median 5.0) compared with 22.5 (median 8.0) for those in which a pediatric neurosurgeon was a middle author (p < 0.0001). Seventy-nine percent of articles were clinical research and 21% were basic science or translational research; however, basic science and translational articles had a mean of 36.9 citations per publication (median 15) compared with 12.6 for clinical publications (median 5.0; p < 0.0001). Among clinical articles, tier 1 papers had a mean of 15.0 citations per publication (median 8.0), tier 2 papers had a mean of 18.7 (median 8.0), and tier 3 papers had a mean of 7.8 (median 3.0). Neuro-oncology papers received the highest number of citations per publication (mean 25.7). The most common journal was the Journal of Neurosurgery: Pediatrics (20%). MD/PhD faculty members had significantly more citations per publication than MD faculty members (mean 26.7 vs 14.0; p < 0.0001) and also a higher number of publications per author (mean 38.6 vs 20.8). The median ih(5)- and ir(5)-indices per program were 14 (range 5–48) and 10 (range 5.6–37.2), respectively. The mean ir(5)/ih(5)-index ratio was 0.8. The top 5 fellowship programs (in descending order) as ranked by the ih(5)-index corrected for number of faculty members were The Hospital for Sick Children, Toronto; Children’s Hospital of Pittsburgh; University of California, San Francisco Benioff Children’s Hospital; Seattle Children’s Hospital; and St. Louis Children’s Hospital.CONCLUSIONSAbout two-thirds of publications authored by pediatric neurosurgeons are pediatrics-specific, although non–pediatrics-specific articles averaged more citations. Most of the articles authored by pediatric neurosurgeons are clinical, with basic and translational articles averaging more citations. Neurosurgeons with PhD degrees averaged more total publications and more citations per publication. In all, this is the most advanced and informative analysis of publication productivity in pediatric neurosurgery to date.

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“…Thus, if P i were to be the average publications per year for a particular institute i and P 0 -the national average of P i , the normalized publication performance (NPP) would be given by following formula that has been described previously-NPP i 0 0 = P P P [14] • The quality of original work being published from the institutes was assessed as follows -institutes were first divided into quartiles based on the number of original papers published. All original papers published by institutes in the highest quartile were listed, and the citations received by these papers were determined.…”

Section: Methodsmentioning

confidence: 99%

Publication performance and research output of Neurology and Neurosurgery training institutes in India: A 5-year analysis

Madhugiri

2015

Neurol India

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An Analysis of the Citation Climate in Neurosurgical Literature and Description of an Interfield Citation Metric

Abstract: G1, group 1G2, group 2G3, group 3G4, group 4IFCM, interfield citation metric.

Cited by 12 publications

References 14 publications

Worldwide research productivity in the field of back pain

Worldwide research productivity in the field of back pain

Taking the next step in publication productivity analysis in pediatric neurosurgery

Publication performance and research output of Neurology and Neurosurgery training institutes in India: A 5-year analysis

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