NDLI: Improving levels of evidence in studies published in spinal journals from 1983 to 2011.

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Improving levels of evidence in studies published in spinal journals from 1983 to 2011.

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Year: 2013 Volume: 27 Issue: 1

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Year: 2011 Volume: 25

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Year: 2008 Volume: 22

Year: 1995 Volume: 9

Improving levels of evidence in studies published in spinal journals from 1983 to 2011.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Gnanalingham, Kanna K. Davies, Benjamin M. Balamurali, G. Titoria, P. Doyle, P. Abou-Zeid, A.
Description	Country affiliation: United kingdom Author Affiliation: Gnanalingham KK ( Department of Neurosurgery, Greater Manchester Neuroscience Centre, Salford Royal Foundation Trust, Salford, UK. kanna.gnanalingham@srft.nhs.uk)
Abstract	INTRODUCTION: The evidence basis for spinal surgical practice is closely related to the quality of clinical studies published. In the hierarchy of study designs, the quality of evidence from a randomised controlled trial (RCT) and meta-analysis are considered better than other types of prospective and retrospective study designs. We assessed the level of evidence in studies published from 1983 to 2011 in 4 journals, publishing predominantly on spine related topics. METHODS: Computerised search of the Medline database was undertaken to evaluate the articles published in 4 'spinal' journals (Spine, European Spine Journal, Journal of Spinal Disorders and Techniques and Spinal Cord) from 1983 to 2011. The numbers of RCTs, meta-analyses and other clinical trials (non-RCT) over the time periods 1983-7, 1988-92, 1993-7, 1998-2002, 2003-7 and 2008-11 were compared. RESULTS: From a total number of 21775 articles evaluated, there were 888 (4.1%) RCTs, 93 (0.4%) meta-analyses and 1355 (6.2%) other clinical trials. Overall, comparing the time periods 1983-7 with 2008-11, there were increases in the proportion of RCTs (1.6% to 5.1%), meta-analysis (0% to 0.6%) and other clinical trials (0.9% to 6.3%) and a decrease in the proportion of other articles published (97.6% to 88.1%). These changes appear to have plateaued after 2003-7. CONCLUSIONS: Although RCTs, meta-analysis and other clinical trials form a small proportion of the studies published in leading 'spinal' journals, there have been an encouraging increase in their proportion over the years. This is comparable with other larger surgical specialities and provides a better evidence basis for clinical practice in spinal disorders.
File Format	HTM / HTML
ISSN	02688697
Issue Number	2
Volume Number	27
e-ISSN	1360046X
Journal	British Journal of Neurosurgery
Language	English
Publisher	Taylor & Francis
Publisher Date	2013-04-01
Publisher Place	Great Britain (UK)
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Neurosurgery Evidence-based Medicine Standards Periodicals As Topic Publishing Spine Editorial Policies Statistics & Numerical Data Trends Humans Journal Article Review
Content Type	Text
Resource Type	Article
Subject	Neurology (clinical) Surgery

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. : Publisher's Note

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Evidence & Methods: a new addition to The Spine Journal.

Addendum to 'In this issue...'.

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At the end of another year.

Improving levels of evidence in studies published in spinal journals from 1983 to 2011.

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. : Publisher's Note

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Neurochirurgie: feuille de route.

Getting published--improving the odds.

Evidence & Methods: a new addition to The Spine Journal.

Addendum to 'In this issue...'.

Improving the 'impact' of academic psychiatry.

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Improving levels of evidence in studies published in spinal journals from 1983 to 2011.