Does the implementation of Nurse-Initiated Analgesia lead to an improvement in quality of care?

PICOT QUESTION: PICOT QUESTION
In adult patients with moderate to severe pain presenting to the ER, does the implementation of Nurse-Initiated Analgesia improve quality of care based on indicators such as safety, timeliness of care, and patient satisfaction compared to no intervention at all?

P: Adult patients presenting to the ER with moderate to severe pain.

I: Implementation of Nurse-Initiated Analgesia

C: Compared to no intervention at all

O: Does the implementation of Nurse-Initiated Analgesia lead to an improvement in quality of care???