Background Question
Foreground Question
Background information is the prior knowledge you need to develop a question that needs foreground information.
PICO is a tool to create a foreground question. It's an abbreviation for...
P = Patient or Problem
I = Interventions
C = Comparisons
O = Outcomes
Using the earlier example question, we can break it down into a PICO question like this:
P = Patient or Problem (young children)
I = Interventions (distractions during immunization)
C = Comparisons (no distractions/standard care)
O = Outcomes (lower pain scores)
You may also hear some people use PICOTT. The two T's stand for:
T = Type of Question
Therapy / Diagnosis / Harm / Prognosis / Prevention
T = Type of Study
Systematic review / RCT / cohort study / case-control
Type or Domain |
Explanation |
Types of evidence to answer the question |
Therapy (Treatment) |
Questions about the effectiveness of interventions in improving outcomes in sick patients/patients suffering from some condition. These are the most frequently asked. Among the many treatments offered by clinicians are medications, surgical procedures, exercise, and counseling about lifestyles changes. |
Randomised Controlled Trial (RCT) |
Prevention |
Questions about the effectiveness of an intervention or exposure in preventing morbidity and mortality. Similar to treatment questions. When assessing preventive measures, it is particularly important to evaluate potential harms as well as benefits. |
RCT or Prospective Study |
Diagnosis |
Questions about the ability of a test or procedure to differentiate between those with and without a condition or disease. |
RCT or Cohort Study |
Prognosis (Forecast) |
Questions about the probable cause of a patient's disease or the likelihood that he or she will develop an illness. |
Cohort Study and/or Case-Control Series |
Etiology (Causation) |
Questions about the harmful effect of an intervention or exposure on a patient. |
Cohort Study |
Meaning |
Questions about patients' experiences and concerns. |
Qualitative Study |
University of Canberra. (April 18, 2019). Evidence-Based Practice in Health: Types of Clinical Question. Retrieved from https://canberra.libguides.com/c.php?g=599346&p=4149723
The first video explains background and foreground questions with a brief explanation of PICO. The second provides an example of a PICOTT question and how to turn that question into search terms.