An information synthesis to evaluate nurse practitioner effectiveness

An information synthesis was conducted at the Department of Veterans Affairs Medical Center, Buffalo, New York, to determine the extent to which nurse practitioner (NP) effectiveness had been established in the existing literature. Three hundred fifty documents were reviewed by experts and 102 documents were deleted from the analysis phase. Fifty-six documents referred to as the Better Studies contained the most relevant and valid findings and were compared with a model developed to represent NP effectiveness. NPs were found to effectively provide a wide range of health care services. They can function as independent health care providers as well as collaborative members of the health care team. NPs have been found to have a positive influence on patient-related outcomes. There should be continued use and support of NPs in health care delivery systems. Recommendations for additional study are presented.