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Based on Melnyk B. It stands for:. Many people find that it helps them clarify their question, which in turn makes it easier to find an answer.
Use PICO to generate terms - these you'll use in your literature search for the current best evidence. Once you have your PICO terms, you can then use them to re-write your question. Note, you can do this in reverse order if that works for you.
Often we start with a vague question such as, "How effective is CPR, really? And how do we define effective? PICO is a technique to help us - or force us - to answer these questions.
Note that you may not end up with a description for each element of PICO. So, ask yourself questions such as, am I interested in a specific age cohort? Adults, children, aged ; a specific population hospitalized, community dwelling ; health cohort healthy, diabetic, etc. I - our question above doesn't have a stated intervention, but we might have one in mind such as 'hands-only'.
C - Is there another method of CPR that we want to compare the hands-only to? Many research studies do not go head to head with a comparison. In this example we might want to compare to the standard, hands plus breathing. O - Again, we need to ask, what do we mean by 'effective'? Mortality is one option with the benefit that it's easily measured. From our PICO, we can write up a clearer and more specific question, such as:.