While it is clear that measuring outcomes is important, choosing which
outcomes to measure remains unclear. Controversy exists in outcomes m
easurement as to which specific outcome measures should be selected. A
dditionally, should one set of outcome measures be used for one purpos
e, such as comparing overall medical outcomes and another set used for
another purpose, such as comparing individual patient outcomes? While
it becomes obvious that comparisons would be easier if the same outco
mes were used, knowing which outcomes to choose to best measure an eff
ect is not always an easy task. The challenge in outcomes measurement
comes in selecting outcomes that are comprehensive, comparable, meanin
gful, and accurate in their reflection of the effects of care.