Skip to Main Content
It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.

Guided Medline Exercise: 7. Combine All Concepts

7.  Combine all Concepts

In Steps 2-7, we performed a separate Subject Heading and Keyword search for each PICO element: Population/Problem, Intervention, Outcome

Now, we will join our previous searches with the operator AND

Step by Step: Combine all Concepts

Combine all Concepts

Start in your Medline Search History:

  1. Note: you may need to Expand your Search History by clicking the Expand button to see all of your previous searches
  2. Identify the Population/Problem (3), Intervention(6) and Outcome(9) combined searches
  3. Start by combining Population/Problem and Intervention
    • Select the checkbox next to 
      • 1 or 2 (Population/Problem)
      • 4 or 5 (Intervention)
    • Combine with AND
  4. You now have a new combined search for Population/Problem and Intervention on line 10
  5. Finally add the Outcome to your new combined search (combining all PICO concepts)
    • Select the checkbox next to 
      • 3 and 6 (Population/Problem + Intervention)
      • 7 or 8 (Outcome)
    • Combine with AND
  6. The combined PICO concept search is shown in the Search History
 
Video Demo: Combine all concepts

Combine all Concepts

1. Using steps 1-6 above, combine your searches.

TIPS

  • Your search may have more lines of search terms for each aspect of your topic
    • Follow this logic:
      • All sets for the first concept are combined with OR
      • All sets for the second concept are combined with OR
      • These 2 resulting sets are combined with AND
      • Combine the sets for the third concept with OR
      • Then combine this result with the previous result with AND
  • The number of results after combining just 2 sets with AND may be small,
    • STOP and review the results
    • Also, consider combining just the P, or first, concept and the O, or third, concept with AND.

2. Review the results