An assessment of academic productivity in pediatric neurosurgery

Kalra, Ricky; Kestle, John R. W.

doi:10.3171/2013.6.peds13112

Cited by 24 publications

(14 citation statements)

References 12 publications

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“…General, spine, and pediatric neurosurgeons had lower bibliometrics compared with peripheral nerve, neuro-oncology/skull base, radiosurgery, functional/epilepsy, and vascular neurosurgeons. With the exception of the recent paper by Kalra and Kestle, 29 this represents the first attempt to compare publication productivity among neurosurgical subspecialties. Kalra and Kestle used Google Scholar (Harzing's Publish or Perish) to determine the h-and g-indices for 72 academic pediatric neurosurgeons.…”

Section: Discussionmentioning

confidence: 99%

An analysis of publication productivity for 1225 academic neurosurgeons and 99 departments in the United States

Khan¹,

Thompson

Taylor

et al. 2014

JNS

108

120

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Object Bibliometrics is defined as the study of statistical and mathematical methods used to quantitatively analyze scientific literature. The application of bibliometrics in neurosurgery is in its infancy. The authors calculate a number of publication productivity measures for almost all academic neurosurgeons and departments within the US. Methods The h-index, g-index, m-quotient, and contemporary h-index (hc-index) were calculated for 1225 academic neurosurgeons in 99 (of 101) programs listed by the Accreditation Council for Graduate Medical Education in January 2013. Three currently available citation databases were used: Google Scholar, Scopus, and Web of Science. Bibliometric profiles were created for each surgeon. Comparisons based on academic rank (that is, chairperson, professor, associate, assistant, and instructor), sex, and subspecialties were performed. Departments were ranked based on the summation of individual faculty h-indices. Calculations were carried out from January to February 2013. Results The median h-index, g-index, hc-index, and m-quotient were 11, 20, 8, and 0.62, respectively. All indices demonstrated a positive relationship with increasing academic rank (p < 0.001). The median h-index was 11 for males (n = 1144) and 8 for females (n = 81). The h-index, g-index and hc-index significantly varied by sex (p < 0.001). However, when corrected for academic rank, this difference was no longer significant. There was no difference in the m-quotient by sex. Neurosurgeons with subspecialties in functional/epilepsy, peripheral nerve, radiosurgery, neuro-oncology/skull base, and vascular have the highest median h-indices; general, pediatric, and spine neurosurgeons have the lowest median h-indices. By summing the manually calculated Scopus h-indices of all individuals within a department, the top 5 programs for publication productivity are University of California, San Francisco; Barrow Neurological Institute; Johns Hopkins University; University of Pittsburgh; and University of California, Los Angeles. Conclusions This study represents the most detailed publication analysis of academic neurosurgeons and their programs to date. The results for the metrics presented should be viewed as benchmarks for comparison purposes. It is our hope that organized neurosurgery will adopt and continue to refine bibliometric profiling of individuals and departments.

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Section: Discussionmentioning

confidence: 99%

An analysis of publication productivity for 1225 academic neurosurgeons and 99 departments in the United States

Khan¹,

Thompson

Taylor

et al. 2014

JNS

108

120

View full text Add to dashboard Cite

show abstract

“…1,4,12,[14][15][16]24,27,31,32 In 2013, Kalra and Kestle that host accredited pediatric fellowship programs. They found that the publishing productivity of the pediatric neurosurgeons in these groups, measured using the h-and g-indices, was on par with the productivity of neurosurgeons in all academic departments.…”

Section: ©Aans 2014mentioning

confidence: 99%

Bibliometric evaluation of pediatric neurosurgery in North America

Klimo

Venable

Khan

et al. 2014

PED

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Object The application of bibliometric techniques to academic neurosurgery has been the focus of several recent publications. The authors provide here a detailed analysis of all active pediatric neurosurgeons in North America and their respective departments. Methods Using Scopus and Google Scholar, a bibliometric profile for every known active pediatric neurosurgeon in North America was created using the following citation metrics: h-, contemporary h-, g-, and e-indices and the m-quotient. Various subgroups were compared. Departmental productivity from 2008 through 2013 was measured, and departments were ranked on the basis of cumulative h- and e-indices and the total number of publications and citations. Lorenz curves were created, and Gini coefficients were calculated for all departments with 4 or more members. Results Three hundred twelve pediatric neurosurgeons (260 male, 52 female) were included for analysis. For the entire group, the median h-index, m-quotient, contemporary h-, g-, and e-indices, and the corrected g- and e-indices were 10, 0.59, 7, 18, 17, 1.14, and 1.01, respectively; the range for each index varied widely. Academic pediatric neurosurgeons associated with fellowship programs (compared with unassociated neurosurgeons), academic practitioners (compared with private practitioners), and men (compared with women) had superior measurements. There was no significant difference between American and Canadian pediatric neurosurgeons. The mean Gini coefficient for publications was 0.45 (range 0.18–0.70) and for citations was 0.53 (range 0.25–0.80). Conclusions This study represents the most exhaustive evaluation of academic productivity for pediatric neurosurgeons in North America to date. These results should serve as benchmarks for future studies.

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“…We chose the second methodology to adequately include those journals that, although unconventional, may contain high-impact articles. The publication history of the top 25 North American pediatric neurosurgeons was chosen based on the h-index because the h-index is a measure of career productivity, and as such, these clinicians have a proven track record of highimpact articles [17,20]. A 5-year publication history of the top 25 neurosurgeons was chosen to provide an adequate and current sample of references from which to draw meaningful conclusions.…”

Section: Discussionmentioning

confidence: 99%

“…These bibliometric indices-the h-index in particular-have been widely applied to neurosurgery [17][18][19][20][21][22][23][24][25]. Using this database, we identified the 25 top-ranked North American pediatric neurosurgeons based on the manually calculated h-index from Scopus (Elsevier, www.scopus.com) [17].…”

Section: Introductionmentioning

confidence: 99%