I found an awesome article about your topic: "Patient Perceptions of Provider and Hospital Factors Associated With New Medication Communication." It discusses all the HCHAPS you mentioned in your posting. Maybe the article will direct you to your intervention. My keywords were "Nurse communication AND patient perception AND medication.
I agree that you can narrow down your topic. If you want to help the nurses how to teach new medications then your population maybe the nurses. What do you think? But if your population is the older adults, your PICO questions could be like this: in older adult patients in acute care setting, how does quizzing the patients about their medications by the nurses increase perception communication?
I agree that you can narrow down your topic. If you want to help the nurses how to teach new medications then your population maybe the nurses. What do you think? But if your population is the older adults, your PICO questions could be like this: in older adult patients in acute care setting, how does quizzing the patients about their medications by the nurses increase perception communication?