Identifying Māori ethnicity for estimating trends in fatal and serious non-fatal injury
Article first published online: 2 AUG 2011
© 2011 The Authors. ANZJPH © 2011 Public Health Association of Australia
Australian and New Zealand Journal of Public Health
Volume 35, Issue 4, pages 352–356, August 2011
How to Cite
Gulliver, P. J., Cryer, C., Langley, J. D. and Davie, G. S. (2011), Identifying Māori ethnicity for estimating trends in fatal and serious non-fatal injury. Australian and New Zealand Journal of Public Health, 35: 352–356. doi: 10.1111/j.1753-6405.2011.00730.x
- Issue published online: 2 AUG 2011
- Article first published online: 2 AUG 2011
- Submitted: May 2010 Revision requested: January 2011 Accepted: March 2011
- injury trends
Objectives: Counts of mortality and morbidity based on routinely collected national datasets have undercounted Māori, the indigenous people of New Zealand. To correct for the undercount, when estimating fatal and serious non-fatal injury incidence, the ‘ever-Māori’ method has been used. This study sought to determine how well the ever-Māori method corrects for the undercount.
Methods: Trends in frequencies and age-standardised rates for fatal injury indicators were compared using: (a) ever-Māori classification; (b) New Zealand Census Mortality Study adjustment ratios applied to Total Māori counts from the Mortality Collection; and (c) Total Māori counts from the Mortality Collection. For serious non-fatal injury, trends using ever-Māori were compared with Total Māori from hospital discharge data.
Results: The absolute number of injuries attributable to Māori varied depending on the method used to adjust for ethnicity status, but trends over time were comparable.
Conclusions and implications: At present, there is no optimal method for adjusting for the undercount of Māori in routinely collected health databases. Reassuringly, trends in fatal and serious non-fatal injury are similar across the methods of adjusting for the undercount.