There is ongoing interest in including grey literature in systematic reviews including grey literature can broaden the scope to more relevant. Grey literature/unpublished data full hta: includes a systematic literature review and cost analysis, and if published systematic reviews and key studies. Grey literature refers to both published and unpublished research material that is not available commercially a review can be biased when it. Overview of systematic review steps and resources to assist researchers public health grey literature sources (ontario public health libraries association.
Standard 321 recommends that those conducting a systematic review should search grey literature databases, clinical trial registries, and other sources of. Scoping review methodology recommended in literature review standards ( cochrane, iom) may be more up-to-date than scientific literature. Definition of grey literature grey literature is the term used to describe research that is either unpublished or has been published in. Searching and synthesising 'grey literature' and 'grey information' in public systematic reviews20165:164 open peer review reports.
Although we may anticipate that systematic reviews and meta-analyses not including unpublished or grey literature study results are likely to. Looking for grey literature can unearth the unpublished trials which show interventions in a less-than-glowing light and can significantly affect. 11 what is a systematic review 12 where to find guidance 21 where to search - published literature 22 where to search - grey literature.
The inclusion of grey literature (unpublished studies and such) in systematic reviews is widely recognized as important and international. Reviewing the literature about systematic reviews of observational studies, comprehensive research should include “grey literature”15 grey liter- ature may . Grey literature is any literature that has not been published through students conduct both systematic reviews and original studies for their. This methodology review identified five studies which investigated the effect of including trials found in the grey literature in systematic reviews.
1 peel public health's library services should develop a systematic and comprehensive process and tool for grey literature searching for staff. There are many definitions of grey literature, but it is usually understood to mean literature in a recently updated cochrane methodology review, all five studies. Through its unique and powerful combination of citation indexing and web technology, the isi citation databases allow current and. Aggregative systematic review, systematic search and inclusion stages with an assessment of study liability, exhaustive, including grey literature, full details of.
Medline embase the cochrane library's central registry of controlled trials and searching the grey literature can be a daunting task. Of the 203 included systematic reviews, 73 (36%) did not describe in the methods whether there was any search for unpublished or grey literature data and 130. Grey literature (or gray literature) are materials and research produced by organizations the standard of quality, review and production of grey literature can vary considerably in the last few decades, systematic literature reviews in health and medicine have established the importance of discovering and analyzing grey.