It's important to formulate a focused research question for your academic work. There are different frameworks you can use to help structure your research question. The different frameworks are applicable for different kind of studies.
Use the PICO framework when you are using a clinical research question.
Video How to use PICO to refine your research question (1:43 min) Medical College of Wisconsin Libraries
If you have a qualitative research question you can use the PEO framework. This film shows examples of both PICO and PEO questions.
Video PEO and PICO question (2:53 min).
Video Evidence based practice (EBP) Module 1: Clinical questions (4:48 min), Dalhousie University Libraries