Changing patterns of healthcare delivery, which emphasize the use of multi-disciplinary teams, mean that there is an increasing need for healthcare professionals to exchange information about patients and their treatment, which is being facilitated by the use of electronic communications systems and e-health systems. Despite the increasing recognition of the importance of patients’ views about these changes, especially about their concerns about the implications for their personal privacy, there is a lack of theoretical modelling of their perspective. This paper evaluates the application of the model of trust and risk-taking within organisations which was developed by Mayer et al. (1995) to explain the empirical findings of a national survey of New Zealanders’ attitudes to e-health systems.