![Key Operators in OVID
Operator Command Example
* Find alternate endings to this nurs* [will find nurse, nursing,
word nurses]
.tw. Search for this term in the anxiety.tw.
Title and Abstract fields
adj Search for one term within x patient adj3 anxiety [will find
number of terms from another patient within three words of
anxiety]
AND Find articles where both terms smoking AND cessation
appear
OR Find articles where either smoking OR tobacco
term appears
11](https://image.slidesharecdn.com/rss2012literaturesearches-120612111051-phpapp01/85/RSS-2012-Literature-Searches-11-320.jpg)
Uploaded byWesam Abuznadah
RSS 2012 Literature Searches
This document provides guidance on conducting literature searches and reviews. It discusses choosing search terms, developing a search strategy worksheet, searching bibliographic databases like PubMed and EMBASE, applying limits, and evaluating search results. Screenshot examples from PubMed demonstrate how to use Medical Subject Headings (MeSH) to search for and combine concepts. Useful references and websites for literature searching are also listed. The overall aim is to guide researchers in developing an effective, systematic approach for comprehensively searching the existing literature.
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Similar to RSS 2012 Literature Searches
RSS 2012 Literature Searches
- 1.
- 2. Literature Searches 4th Research Summer School 12 June 2012 Taghreed Justinia Msc PhD Asst. Professor, Department of Health Informatics Asst. Director, Information & Communication Technology KSAU-HS, NGHA Tel. +966 2 6240000 ext 26217 / 26210 Email: JustiniaT@ngha.med.sa
- 3. In this session… Choosing Search Terms Search strategy Worksheet Conducting the Search Concepts Applying Practical Screening Criteria PubMed Example 3
- 4. Steps in literature review writing Selecting the research questions Selecting the sources Choosing search terms Conducting the search Applying practical screening criteria Critically appraising the literature Journals & Articles Websites 4
- 5. Citation List Searchingdatabases will result in a list of citations, which include the information needed to locate the articles in print journals and other sources 5
- 6.
- 7. Bibliographic Databases Medicine MEDLINE (PubMed or Ovid), EMBASE, Cochrane Library, PsycINFO Multidisciplinary Scopus Web of Science Nursing and Allied Health CINAHL 7
- 8. Break down the research question Select your database Break down the research question into concepts Identify subject headings for each concept Identify text words for each concept Use a “target article” to help identify search terms (keywords) Use a worksheet to keep track of your terms Your database will determine your subject headings and operators (i.e., truncation symbols) 8
- 9. Different databases have different subject headings Database Subject Headings Medline/PUBMED MeSH EMBASE EMTREE CINAHL CINAHL Headings Cochrane Library MeSH PsycINFO Thesaurus of Psychological Index Terms Scopus, Web of Science N/A Select subject headings that are the closest match for your concept General descriptors: Anatomy More specific descriptors: Ankle 9
- 10. Search Strategy Worksheet SearchStrategy Worksheet_________________________________________________ Search statement: I am looking for articles about ___________________________________________________________________ After writing out the search statement, underline the key concepts. Decide how the concepts will be combined together using the AND and OR Boolean operators. Concepts to be ANDed go across the grid and concepts to be ORed go down the grid. Fill in the grid with the key concepts and possible synonyms for each concept. AND AND AND AND OR OR OR OR OR OR OR Databases to search:___________________________________________________________________________________________ Limits to apply:_______________________________________________________________________________________________ 10
- 11. Key Operators inOVID Operator Command Example * Find alternate endings to this nurs* [will find nurse, nursing, word nurses] .tw. Search for this term in the anxiety.tw. Title and Abstract fields adj Search for one term within x patient adj3 anxiety [will find number of terms from another patient within three words of anxiety] AND Find articles where both terms smoking AND cessation appear OR Find articles where either smoking OR tobacco term appears 11
- 12.
- 13. Conducing the Search Start with your first concept Search for the subject headings first Then search text words Combine these synonymous searches with OR using your search history Repeat for your second, third, and subsequent concepts Finally, combine large search results set with AND Example MeSH search: hypertenstion AND toxicity 13
- 14. Concepts Which concepts arecontained in the question: Does hand washing prevent MRSA in the ICU? Hand washing Prevention MRSA ICU 14
- 15. Does hand washingprevent MRSA in the ICU? Hand washing MRSA ICU Prevention 15
- 16. Getting the searchresults Concept 1 Concept 1 SEARCH 1 SEARCH 6 SEARCH 2 SEARCH 7 SEARCH 3 SEARCH 8 SEARCH 4 SEARCH 9 SEARCH 5 = 1 OR 2 OR 3 OR 4 SEARCH 10 = 6 OR 7 OR 8 OR 9 SEARCH 11 = 5 AND 10 = RESULTS 16
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- 18. Limits Examples Dateof publication only studies conducted between 2005 and 2010 Participants or subjects only children 6 to 12 years of age Publication language only materials written in English or French Research design only clinical trials 18
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- 20. PubMed An exampleusing MeSH terms MeSH = Medical Subject Heading Access the MeSH Database by choosing the option on the Pubmed homepage Click the search button without entering any search terms to go to the database homepage 20
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- 30. Search for MeSHTerms With the first search term (MRSA) entered in the PubMed search builder, we can continue to use the MeSH Database to find terms and build our PubMed search 30
- 31. Combining Concepts Wewant to find articles that include both the concept of MRSA AND the concept of Hand washing. So we added our second term to the search builder with the default AND Both terms have been added and we can now click the Search PubMed button. 31
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- 34. Good Search Results! This search yielded a good number of articles on out topic We can continue to build more MeSH terms and narrow down the search 34
- 35. Useful References Fink,A. (2005). Conducting Research Literature Reviews. London: Sage. Greenhalgh, T. (2006). How to read a paper (3rd ed.). London: BMJ Publishing Group. Sackett, D., Straus, S., & Richardson, W. (2000). Evidence-based medicine (2nd ed.). Edinburgh: Churchill Livingstone. Wilson, P. (2002). How to find the good and avoid the bad or ugly. A short guide to tools for rating quality of health information on the internet. BMJ, 324, 598-602. 35
- 36. Useful Sites NHSSolutions for Public Health http://www.sph.nhs.uk/what-we-do/public-health-workforce/resources CADTH. Grey Matters: a practical search tool for evidence-based medicine - http://cadth.ca/en/resources/grey-matters Cochrane Handbook for Systematic Reviews and Interventions - http://www.cochrane-handbook.org/ IOM (Institute of Medicine). Finding what works in health care: standards for systematic reviews - http://www.iom.edu/Reports/2011/Finding-What-Works-in-Health-Care-Stan 36
- 37. Questions? 37
Editor's Notes
- #10 General descriptors: Anatomy More specific: Ankle