Book excerpt: What is the evidence? Why do you need it? How do you evaluate it? How do you use it to make decisions? Put the evidence to work for your patients. Master the knowledge and clinical decision-making skills you need to provide the very best care for your clients…based on the evidence. Step by step, you’ll learn how to find and evaluate the existing research and determine whether there is sufficient clinical evidence to support a specific treatment and whether it should be recommended or used to address a client’s need. A wealth of examples drawn from the literature illustrates its role in everyday practice.