includes a useful taxonomy
of the variables that commonly have been used to measure
HRQoL. Although the model was published in 1995,
it has not been widely used. We revised their original model
in three substantive ways: (a) adding arrows to show that
biological function is influenced by characteristics of both
individuals and environments, (b) deleting nonmedical factors,
and (c) deleting the labels on the arrows because they
tended to restrict characterization of the relationships. We
also provided theoretical background for each of the major
components of the model and examples of instruments for
measuring them. The result is a revised model to advance
knowledge and use of the concept of HRQoL in nursing
and health care.of HRQoL and the causal
relationships among them.