MeSH is a pool of medical terminology with very specific definitions for each word.
They are used to tag articles with the relevant content in databases like PubMed, Cochrance. Using the Medical Subject Headings. (MeSH) is efficient because they search for matching content rather than text.
For any particular article, the related MeSH terms can be found at the bottom of the Article record page.
Searching with MeSH terms retrieves articles with content specific to the MeSH term searched.
Choosing your specificity.
MeSH terms have a "hierarchy". The more specific the term is, the lower it is on the MeSH term tree, the less articles there are with such specific content. Conversely, umbrella terms such as "Diabetes mellitus", which defines disorders characterised by high blood sugar and glucose intolerance will retrieve more articles less specific to any one disorder. This hierarchy shows the relationships between terms and get lead you in finding terms that you might not be aware of
Below is an example of a MeSH term tree
To search with MeSH terms, one needs to retrieve the MeSH terms describing exactly what you're interested in from the MeSH database and add it into a Search Builder.. Please note that you can only retrieve MeSH terms in your results and not related articles. Select your desired MeSH terms and add them into the Search Builder to search in PubMed.
A Search Builder helps you to narrow or expand your search by combining multiple MeSH terms with Boolean operators (AND, OR and NOT) and retrieve results with the relevant content.
As always, you must also be “flexible” to not use MeSH if you yield too little results.
Step 1: At the MeSH database page, key your subject matter into the search bar and select the most relevant MesH term from the database.
Step 3: After clicking the subheadings you want, you can narrow your search or widen your search. Only the related subheadings to the MeSH terms will appear.
|Expanded search build||Narrowed search build|
When you have constructed your desired search, click "Search PubMed" below the Search Builder.
To reuse your search terms, copy the current Search Details (found at the bottom of the right most column of the page, as shown below). and paste your copied Search Details into the Search Builder before clicking "Add to Search Builder" and clicking "Search Pubmed". This will allow you to include your search results. If you want to expand your search, make sure the terms are connected via the "OR" Boolean operator.