In order to ensure the equity of the liver allocation process, it is important to create objective, scientifically validated markers of frailty in patients with end-stage liver disease that accurately predict patient outcomes. Many measures have been developed to assess this clinical state in elderly patients, but none have been applied to patients with cirrhosis, a population at increased risk for accelerated functional decline. This protocol is designed to learn more about the effects of functional status (also known as frailty) in liver transplant patients and patient outcomes both before and after liver transplant.