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?

Here is my 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?Adult patients presenting to the ER with moderate to severe pain.Implementation of Nurse-Initiated Analgesia.Compared to no intervention at all.Does the implementation of Nurse-Initiated Analgesia lead to an improvement in quality of care???