In this module you will learn how to find relevant Subject Headings for our first, or P, element.
Remember, for each PICO element we will perform both a Subject Heading and a Keyword search. Each type of search has different advantages that will make our search more relevant.
Let's begin with the Subject Heading.
Tip: Beginning a search design with a subject heading is good practice as the information in the Scope Note and Tree will help create the subsequent keyword search.
For this guide we will consider the research question: "In infants, does using disposable diapers vs. cloth diapers affect the likelihood of diaper rash?"
Start building your search using the first PICO element, the concept for Problem/Population. For this part of the exercise we will use the search term: infants.
To confirm that the Subject Heading Infant is correct, we will look at additional information: Scope notes and Tree.
The Explode tool selects the selected heading as well as any narrower terms that are indented below it. This is a useful shortcut, for example, Explode Canada will find papers that are tagged with the heading of Canada as well as any that are tagged with the Provinces. If some of the terms are not relevant to your question, uncheck explode and select only the terms that match your question.
In our example, selecting Explode for Infant will include all the narrower terms indented below it in the list. These describe specific subsets of our patient population, "Infant."Major Concept
The Major Concept tool will only search for those articles where the topic is the main point of the paper. Where a subject heading has been designated as a major concept of the paper, it is listed under Major Subjects on the document's profile and identified by a MM in the search history.
As we will be searching additional PICO elements, we will keep the search broad and not use Major Concept for Infant
Following the steps outlined above, find the most appropriate subject heading for your first concept.TIPS: