Abstract
A review of the top-cited articles in a scientific discipline can identify areas of research that are well established and those in need of further development, and may, as a result, inform and direct future research efforts. Our objective was to identify and characterize the top-cited articles in traumatic brain injury (TBI). We used publically available software to identify the 50 TBI articles with the most lifetime citations, and the 50 TBI articles with the highest annual citation rates. A total of 73 articles were included in this review, with 27 of the 50 papers with the highest annual citation rates common to the cohort of 50 articles with the most lifetime citations. All papers were categorized by their primary topic or focus, namely: predictor of outcome, pathology/natural history, treatment, guidelines and consensus statements, epidemiology, assessment measures, or experimental model of TBI. The mean year of publication of the articles with the most lifetime citations and highest annual citation rates was 1990 ± 14.9 years and 2003 ± 6.7 years, respectively. The 50 articles with the most lifetime citations typically studied predictors of outcome (34.0%, 17/50) and were specific to severe TBI (38.0%, 19/50). In contrast, the most common subject of papers with the highest annual citation rates was treatment of brain injury (22.0%, 11/50), and these papers most frequently investigated mild TBI (36.0%, 18/50). These findings suggest an intensified focus on mild TBI, which is perhaps a response to the dedicated attention these injuries are currently receiving in the context of sports and war, and because of their increasing incidence in developing nations. Our findings also indicate increased focus on treatment of TBI, possibly due to the limited efficacy of current interventions for brain injury. This review provides a cross-sectional summary of some of the most influential articles in TBI, and a bibliometric examination of the current status of TBI research.
Highlights
In an effort to improve clinical outcomes following traumatic brain injury (TBI), leading scientific institutions have pioneered an international, multidisciplinary research initiative (The Lancet, 2012)
In comparing TBI papers with the most lifetime citations to those with the highest annual citation rates, it is possible to gage, respectively, which papers have had the greatest influence in TBI, and which articles are currently discussed, referenced, and shaping the Country of correspondence
As the citation rates we present do not control for general growth in the TBI field, our findings should be interpreted with caution
Summary
In an effort to improve clinical outcomes following traumatic brain injury (TBI), leading scientific institutions have pioneered an international, multidisciplinary research initiative (The Lancet, 2012). The Canadian Institutes of Health Research, the National Institutes of Health, and the European Commission – leading research agencies within their respective jurisdictions – have recently collaborated to fund and advance TBI research through the International Initiative for Traumatic Brain Injury Research (European Commission, 2012; The Lancet, 2012; The Lancet Neurology, 2013; Tosetti et al, 2013). Commitments to advance our understanding of TBI and the management strategies available to treat this injury will be effectuated by an increase in research activity (The Lancet, 2012) It is important, to examine current TBI literature and identify the areas of research that are well established and those in need of further development, as this may inform researchers and granting agencies where to focus future research efforts. Reviewing the literature with this aim is especially important considering that consensus statements report that our understanding of TBI has progressed further in some areas than in others (Zitnay et al, 2008)
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