IJE Advance Access published online on June 29, 2009
International Journal of Epidemiology, doi:10.1093/ije/dyp248
Published by Oxford University Press on behalf of the International Epidemiological Association © The Author 2009; all rights reserved.
Commentary: Trends in indigenous inequalities in mortality in New Zealand
Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, Canada. E-mail: sam.harper@mcgill.ca
Accepted 3 June 2009
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Measuring and monitoring social differences in health is an important component of public health surveillance for at least two reasons. First, social group differences in health tell us something about the potential impacts of structural inequalities in society. Health is a crucial component of overall well-being, and differences in health between important social groups may indicate the degree to which major social institutions structure the resources and opportunities for healthy living.1 Secondly, continued monitoring of social differences in health provides an opportunity to reconcile temporal trends in health inequalities with aetiological hypotheses regarding the causes of health differences.2 Whether the social patterning of health reflects social differences in hazardous