To help keep your question focused and relevant, try using the PICO framework:
Before gathering evidence, consider additional/alternative keywords for each part of your PICO question.
From the Penn State University Libraries ScholarSphere: https://scholarsphere.psu.edu/resources/d3368641-dc10-4d6c-bf72-4ac8dec7eb96
Evaluating Intervention Evidence In Hudson, M.W., and DeReuiter, M. (2021). Professional Issues in Speech-Language Pathology and Audiology, Fifth Edition. Plural Publishing, Inc.
Table 7-7 Levels of Evidence for Intervention Research In Nelson, Lauren K., and Gilbers, J. L. (2021). Research in Communication Sciences and Disorders: Methods for Systematic Inquiry, Fourth Edition. Plural Publishing, Inc.