BUMC MEDLINE PLUS/OVID TUTORIAL

Alumni Medical Library
Boston University Medical Center


TUTORIAL MENU
 
Tutorial Home
Instructions for Using the Tutorial
Developing Your Search Strategy
Formulating Your Question
Choosing An Appropriate Database
Selecting the Best Search Terms
Advantages and Disadvantages of Text Word and Title Word Searching
Selecting the Best Medical Subject Headings
Quiz Section I: Text Word vs. MeSH Searching
Mapping Function
Subheadings
Tree Display
Explode Function
Focus Function
Combining Sets
Quiz Section II: Combining Sets
Limiting
Quiz Section III: Reviewing the Explode, Focus, Subheadings, and Limit Options
Viewing or Displaying Search Results
Full Text Options
Printing, E-Mailing, and Saving Search Results
Ordering Articles
Searching Tips, Hints, & Reminders
Tutorial Evaluation
ADDITIONAL TOPICS
OVID's Main Menu Icons
Author Searching
Title Word Searching
Journal Searching
OTHER RESOURCES
Searching for Evidence in the Primary Medical Literature Tutorial: EBM Tutorial
More Information about BUMC MEDLINE Plus/OVID
Direct-entry Commands: enable users to bypass menu options
OVID Documentation
FOCUS FUNCTION

FOCUS is a completely separate decision from EXPLODE.

FOCUS will restrict your search to those citations in which the subject heading (MeSH term) is considered the focus, main topic, emphasis, or major point of the articles.

There are two ways to approach the decision about whether to FOCUS your search:

  1. If there is a lot of literature on your topic click on Focus.

    Using the Focus command will retrieve fewer articles, but these will emphasize the subject rather than simply mention it as a peripheral or secondary topic.

  2. To begin with a broad search strategy or comprehensive search do not Focus.

Important Note:

Never Focus country names or geographic regions. Avoid Focusing if your topic is new, rare, or does not have a lot of literature to represent it.


   
 
  Copyright © 2003. All rights reserved. Created by Kathy Schilling, Ed.D. Alumni Medical Library, Boston University Medical Center. Permission has been granted by Ovid Technologies, Inc. to use Web pages, screen shots, and icons from the Ovid Web Gateway. Graphical design originally created by Stefanie Curry, Department of Family Medicine, Boston University School of Medicine.