What ways does qualitative findings contribute to EBP?

Evidence based practice (EBP) is important when it comes to nursing research. In what ways does qualitative findings contribute to EBP?

If you had to pick a qualitative research method(s) (phenomenological, grounded theory, ethnographic, case study, or CBPR), which would you choose and why?

Response should be logical and substantive with a minimum of 300-350 words. Your response should be unique and include cited scholarly references.