PICO- PubMed

Tipo de recurso-e: 
Bases de datos
Bases de datos y otros recursos
Subsección para Bases de datos y otros recursos:: 
Bases de datos
Medicina Basada en la Evidencia

The acronym PICO is commonly used and might come in handy to help you think more clearly before diving into a PubMed search. PICO stands for the following:
•    P - Patient or problem
•    I - Intervention, for example, treatment, test, exposure .
•    C - Comparison intervention .
•    O - Outcome
Most clinical questions can be broken down into components that will fit into two or more of the above PICO terms. Using the clinical question you have been given as an example, here is how the terms fit into PICO.
The PICO terms that you have identified can now be used in your PubMed search, but first, let's review the concept of MeSH terms, which you will use to streamline your searches