Qualitative research is an approach used in health care research to understand people's experiences and the meaning of phenomena. Unlike quantitative research which analyzes trends and frequencies, qualitative research seeks to determine meaning through description. It develops concepts to aid understanding of natural phenomena with emphasis on participants' meanings, experiences, and views. While differences exist among qualitative researchers, the research questions and phenomena being studied should determine the methodology used. Qualitative and quantitative research are complementary and both are needed to fully understand a phenomenon.