The kind of question in the interview depends on your theoretical framework and your paradigmatic position. Any way, the script must be determined by your research objective
Of course, if you are working from a phenomenological paradigm, you won't need a particular theoretical framework. And your questions probably can be pretty free flowing--as long as they address the intended objective--of offshoots of that.
What a wonderful line of questioning. There's much published on the topic, such as perceptions of nursing care quality from different perspectives- patients, nurses' and institutions. More recently, I've seen social identity and patients perception's of nursing care quality discussed. What peaks your curiosity in this area?