Nursing skill mix and nursing time: the roles of registered nurses and clinical nurse specialists.

Objective: The roles of clinical nurse specialists (CNS) and registered nurses, while similar, should also be quite different, with the CNS functioning as an advanced practice nurse. Differences in roles can be partially explained and understood by examining the use of their time. Adjustments to skill mix usually involve using more plentiful but less-skilled workers, and there is a growing body of overseas research in this field.