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Tutorial Instructions

Searchable Questions

About MEDLINE

Keyword/Textword

Searching


Medical Subject Headings

Overview 1

Mapping

Subheadings

MeSH Tree

Explode

Focus

Combining (AND, OR)

Combining Overview

Limiting

Displaying Results

Full Text Articles

Printing/E-Mailing/Saving

Ordering Articles



FOCUS
Screen 2 of 2

In our heart diseases search, we would expect to find a lot of articles about heart diseases. We only want those articles where the concept of heart diseases is emphasized. Therefore, we should FOCUS this search.

Sample retrieval with and without FOCUS. (*)

Notice in the "Results" column that we have a smaller group of articles that FOCUS on heart diseases.

#Search HistoryResultsDisplay
1 exp Heart Diseases/ 202978 DisplayDISPLAY
2 exp *Heart Diseases/ 168616 DisplayDISPLAY

Now that we've learned more about EXPLODE and FOCUS, let's continue our search.