1. Systematic Reviews and Meta-Analyses: These provide comprehensive summaries of the evidence on a specific topic. 2. Randomized Controlled Trials (RCTs): Considered the gold standard for testing the effectiveness of interventions. 3. Cohort Studies: Observational studies that follow a group of people over time. 4. Case-Control Studies: Compare patients with a condition to those without to identify risk factors. 5. Qualitative Research: Provides insights into patient experiences and perspectives.
