RESUMO
OBJECTIVES: Health promotion is a core function of public health services and improving the effectiveness of health promotion services is an essential part of public health service development. This report describes the rationale, the process and the outcomes of a realignment designed to improve the effectiveness of health promotion activities in a public health unit (PHU) in New Zealand. METHODS: A practice environment analysis revealed several factors that were hindering the effectiveness of the health promotion unit's (HPU) activities. Two primary change mechanisms were implemented. The first was an outcomes-focused model of planning and service delivery (to support evidenced-based practice), the second was the reorganisation of the HPU from a topics-based structure to an integrated one based on a multi-risk factor paradigm of population health. RESULTS: During the realignment barriers were encountered on multiple levels. At the individual level, unfavourable attitudes to changes occurred because of a lack of information and knowledge about the benefits of evidence and research. At higher levels, barriers included resourcing concerns, a lack of organisational commitment and understanding, and tensions between the political need for expedient change and research and development need for timely consideration of the impact of different models of practice. CONCLUSIONS AND IMPLICATIONS: This realignment took place within the context of a changing public health environment, which is significantly altering the delivery of public health and health promotion. Realignments designed to facilitate more effective health promotion and public health practice will continue, but need to do so in the light of others' experience and debate.