The research described in this article relates to an attetnpt to develop a tool which enables analysis of the way primary nursing is being implemented in wards. A panel of 28 experts took part in a delphi study, from which 16 dimensions of primary nursing were identified. A questionnaire based on this data has been widely distributed to all ward sisters!charge nurses working in hospitals in Wales. It is hoped that the completed data will demonstrate valuable information about attribution of improvements in patient care.