Jill Tucker, RN says:

“Big Data is the latest high tech buzzword—the process of analyzing and interpreting information from myriad sources. Nurses and health care professionals are familiar with this concept. They have always been trained to ask pertinent questions, to make careful bedside observations and to take extensive notes. Whether it’s called ‘knowing your patient’, or ‘data mining’, the best health care professionals collect and process information, as well as personally attend to each patient—the kind of human contact that may not register on data spread sheets.”
The Next Revolution in Healthcare

Forbes.com  October 1, 2012