Ethnic inequalities in cancer incidence and mortality: census-linked cohort studies with 87 million years of person-time follow-up

Cancer makes up a large and increasing proportion of excess mortality for indigenous, marginalised and socioeconomically deprived populations, and much of this inequality is preventable. This study aimed to determine which cancers give rise to changing ethnic inequalities over time. New Zealand cens...

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Bibliographic Details
Published in:BMC cancer 2016-09, Vol.16 (1), p.755-755, Article 755
Main Authors: Teng, Andrea M, Atkinson, June, Disney, George, Wilson, Nick, Sarfati, Diana, McLeod, Melissa, Blakely, Tony
Format: Article
Language:English
Subjects:
Alcohol
Cancer
Censuses
Datasets
Ethnicity
Health aspects
Infections
Liver cancer
Medical screening
Melanoma
Minority & ethnic groups
Mortality
Obesity
Prostate
Smoking
Social aspects
Tobacco
Trends
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Summary:Cancer makes up a large and increasing proportion of excess mortality for indigenous, marginalised and socioeconomically deprived populations, and much of this inequality is preventable. This study aimed to determine which cancers give rise to changing ethnic inequalities over time. New Zealand census data from 1981, 1986, 1991, 1996, 2001, and 2006, were all probabilistically linked to three to five subsequent years of mortality (68 million person-years) and cancer registrations (87 million person years) and weighted for linkage bias. Age-standardised rate differences (SRDs) for Māori (indigenous) and Pacific peoples, each compared to European/Other, were decomposed by cancer type. The absolute size and percentage of the cancer contribution to excess mortality increased from 1981-86 to 2006-11 in Māori males (SRD 72.5 to 102.0 per 100,000) and females (SRD 72.2 to 109.4), and Pacific females (SRD -9.8 to 42.2) each compared to European/Other. Specifically, excess mortality (SRDs) increased for breast cancer in Māori females (linear trend p 
ISSN:1471-2407
1471-2407
DOI:10.1186/s12885-016-2781-4