Which statement accurately reflects the PICO framework structure?

Which statement accurately reflects the PICO framework structure?

• A. Patient/Population, Intervention, Conditions, Outcomes
• B. Patient/Population, Intervention, Approach, Outputs
• C. Patient/Population, Intervention, Comparison, Outcomes
• D. Patient/Population, Intervention, Study design, Outcomes

Answer: (C)

PICO frames a clinical question by four elements: Patient/Population, Intervention, Comparison, and Outcomes. This setup ensures you clearly specify who you’re treating, what treatment or exposure you’re considering, what you’re using as a benchmark or alternative, and what results matter. The Comparison part is essential because it defines the counterfactual—the alternative against which the intervention’s effect is measured. Without a defined comparison, the question becomes ambiguous about what change in outcomes would be considered evidence of benefit. For example, in adults with hypertension, you might ask whether an ACE inhibitor leads to greater reduction in systolic blood pressure than a thiazide diuretic, focusing on the same outcome to allow a meaningful assessment of relative benefit. The other options replace standard terms with nonstandard ones, like using Conditions or Approach or Outputs, or swap in Study design instead of Comparison; these do not align with how PICO is used to structure questions and search strategies.

PICO frames a clinical question by four elements: Patient/Population, Intervention, Comparison, and Outcomes. This setup ensures you clearly specify who you’re treating, what treatment or exposure you’re considering, what you’re using as a benchmark or alternative, and what results matter. The Comparison part is essential because it defines the counterfactual—the alternative against which the intervention’s effect is measured. Without a defined comparison, the question becomes ambiguous about what change in outcomes would be considered evidence of benefit. For example, in adults with hypertension, you might ask whether an ACE inhibitor leads to greater reduction in systolic blood pressure than a thiazide diuretic, focusing on the same outcome to allow a meaningful assessment of relative benefit. The other options replace standard terms with nonstandard ones, like using Conditions or Approach or Outputs, or swap in Study design instead of Comparison; these do not align with how PICO is used to structure questions and search strategies.