Clinical Nursing Research – research designed to generate evidence to guide nursing practice and to improve the care and quality of life of clients/patients. (Polit, D. (2006) Essentials of nursing research : methods, appraisal, and utilization. Philadelphia : Lippincott Williams & Wilkins, p.4)
Empirical research/evidence- research which is based on observed and measured phenomena and it is research that derives knowledge from actual experience rather than from theory or belief. (http://library.msstate.edu/li/tutorial/empirical).