Adherence is defined as "the extent to which a person's behavior coincides with medical or health advice", which is very important, for both clinical researchers and physicians, to identify the treatment effect of a specific medication(s). . A variety of measures have been developed to calculate the medication adherence. Definitions and methods to address adherence differ greatly in public literature. Choosing which definition should be determined by overall study goals. This package provides the functions to calculate medication adherence based on commonly used definitions.
