Variations in medical practice have been widely documented and are a linchpin in explanations of health disparities. Evidence shows that clinical decision making varies according to patient, provider and health system characteristics. However, less is known about the processes underlying these...

The focus of health promotion is moving from the level of individuals to organizations, communities and broader social policy. Traditional quantitative methods (e.g. social surverys and experimental designs) which are variously appropriate at the level of individual behavior change require...