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The burden of cancer in New Zealand: a comparison of incidence and DALY metrics and its relevance for ethnic disparities

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From Māori Health Review Issue 45
Authors:
  • Costilla R et al
Summary:

These researchers used Markov and cancer disease models to estimate cancer burden measured in disability adjusted life years (DALYs), using data from 27 cancer sites diagnosed in 2006. The age-standardised Māori:non-Māori incidence rate ratios were 1.00 for males and 1.19 for females and higher for DALYs (1.42 and 1.68, respectively). The total burden of cancer for 2006 incident cases (i.e. not age-standardised) was estimated to be approximately 127,000 DALYs. Breast (27%), lung (14%) and colorectal (13%) cancers for females and lung (16%), colorectal (14%) and prostate (16%) cancers for males were the top contributors. By ethnicity, Māori experienced a substantially higher burden from lung cancer (around 25% for both sexes).

Comment:
Māori cancer burden is considerably higher than non-Māori cancer burden, more so than inequality in incidence rates alone would have suggested. Other notable ethnic variations in cancer burden included a greater percentage contribution of stomach and liver cancer among Māori, compared to a greater contribution of haemopoietic and melanoma cancers among non-Māori.
Reference: Aust N Z J Public Health 2013;37(3):218-25
Abstract
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Independent commentary by Dr. Matire Hardwood

Dr Matire Harwood (Ngapuhi) has worked in Hauora Māori, primary health and rehabilitation settings as clinician and researcher since graduating from Auckland Medical School in 1994. She also holds positions on a number of boards, committees and advisory groups including the Health Research Council. Matire lives in Auckland with her whānau including partner Haunui and two young children Te Rangiura and Waimarie.

Research Review publications are intended for New Zealand health professionals.

Disclaimer: This publication is not intended as a replacement for regular medical education but to assist in the process. The reviews are a summarised interpretation of the published study and reflect the opinion of the writer rather than those of the research group or scientific journal. It is suggested readers review the full trial data before forming a final conclusion on its merits.

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