As the Advanced Practice Registered Nurse (APRN) role continues to expand in today's health care environment, APRNs are more frequently tasked with quantifying, evaluating, and improving their individual care processes, as well as demonstrating the impact of their care...continues to analyze the foundations of outcome assessment, provide guidelines for selecting assessment instruments and measuring results, discuss design and implementation challenges in outcomes assessment, and provide an unequaled wellspring of information that will help APRNs to increase their skill level and enhance their professional practice role.