- Effectiveness of Intervention: A question about the treatment of an illness, condition or disability.
- Etiology/Risk: A question about the causes or origins of a disease.
- Diagnosis: A question about the process for determining that someone has a particular disease or injury.
- Prognosis/Predictions: A question that explores what happens to patients over the course of a disease or health condition.
- Methodological: A question that examines published reports to understand how research is conducted and reported.
- Qualitative: A question that does not assess effectiveness. A question that asks “how” or “why”.
Source: Evidence Synthesis Academy at Brown University