Being an informed patient is an empowering concept.1 In the modern healthcare marketplace, the doctor-patient relationship has become a two-way street. It's no longer a situation in which the doctor tells the patient what to do. Today, patients can be full partners in managing their care and well-being.2

In the field of statistics, a five-point rating scale is commonly used to evaluate all sorts of personal responses, feelings, and assessments. This frequently used tool is known as the Likert scale, and most people have completed such a rating device on numerous occasions, most typically in consumer

The scientific concept of complexity is only a few decades old, but like many powerful ways of looking at the world it has spread rapidly throughout the public consciousness. Anyone who has watched even a couple of episodes of "The Big Bang Theory" would have heard multiple references to chaos theory,