How are questionnaires and interviews similar and different in nursing research? What principles identified could improve collection of clinical data? How are questionnaires and interviews similar and different in nursing research?

How are questionnaires and interviews similar and different in nursing research? What principles identified could improve collection of clinical data? How are questionnaires and interviews similar and different in nursing research? What principles identified could improve collection of clinical data? Polit, D. F., & Beck, C. T. (2012). Nursing research: generating and assessing evidence for nursing practice (9th ed.). Philadelphia, PA: Wolters Kluwer Health/Lippincott Williams & Wilkins