Current problems in diagnostic radiology · 2026
Neurointerventional publication metrics by rank, specialty and gender: The impact of academic age and mega-authorship.
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Schurink Estelle, Radmard Mahla, Gailloud Philippe, Yousem David M
Аннотация
BACKGROUND: Bibliometric measures are used to compare neurointerventional faculty trained in neurosurgery, radiology and neurology, but the comparability of citation-weighted metrics across these pathways is not established.
OBJECTIVE: To provide national bibliometric data for academic neurointerventional faculty and to determine whether academic age and mega-authored research distort cross-specialty comparison.
METHODS: Cross-sectional study of 423 neurointerventional faculty at 148 institutions. Scopus data were retrieved in July 2026. Academic age was defined as 2026 minus year of first publication. Specialties were compared unadjusted, adjusted for academic-age tertile, and in multivariable models exploring academic age, rank and gender. Mega-authored publications (>25 authors) were identified and models refitted excluding them.
RESULTS: Median academic age differed by specialty (radiology 24, neurosurgery 20, neurology 18 years; p < 0.001). Output rose steeply with rank (median publications 34, 70 and 160; p < 0.001), which accounted for more variance than academic age. Unadjusted, specialties were indistinguishable on citations (p = 0.698) and h-index (p = 0.177); after age adjustment both differed (p = 0.005, p = 0.028) in favor of neurosurgery over radiology with differences concentrated among assistant professors. Mega-authored publications accounted for a median 44.9% of citations in neurology, 10.6% in neurosurgery and 4.7% in radiology (p < 0.001); excluding them abolished neurology's adjusted citation advantage. Women (9.5%) recorded fewer last-author publications after adjustment (0.68, 95% CI 0.51-0.90).
CONCLUSIONS: Citation-weighted bibliometrics are not comparable across neurointerventional faculty. Academic age and mega-authorship each independently distort them, and both must be accounted for before h-index or citation counts are used in career assessment.
OBJECTIVE: To provide national bibliometric data for academic neurointerventional faculty and to determine whether academic age and mega-authored research distort cross-specialty comparison.
METHODS: Cross-sectional study of 423 neurointerventional faculty at 148 institutions. Scopus data were retrieved in July 2026. Academic age was defined as 2026 minus year of first publication. Specialties were compared unadjusted, adjusted for academic-age tertile, and in multivariable models exploring academic age, rank and gender. Mega-authored publications (>25 authors) were identified and models refitted excluding them.
RESULTS: Median academic age differed by specialty (radiology 24, neurosurgery 20, neurology 18 years; p < 0.001). Output rose steeply with rank (median publications 34, 70 and 160; p < 0.001), which accounted for more variance than academic age. Unadjusted, specialties were indistinguishable on citations (p = 0.698) and h-index (p = 0.177); after age adjustment both differed (p = 0.005, p = 0.028) in favor of neurosurgery over radiology with differences concentrated among assistant professors. Mega-authored publications accounted for a median 44.9% of citations in neurology, 10.6% in neurosurgery and 4.7% in radiology (p < 0.001); excluding them abolished neurology's adjusted citation advantage. Women (9.5%) recorded fewer last-author publications after adjustment (0.68, 95% CI 0.51-0.90).
CONCLUSIONS: Citation-weighted bibliometrics are not comparable across neurointerventional faculty. Academic age and mega-authorship each independently distort them, and both must be accounted for before h-index or citation counts are used in career assessment.