Journal article

Decades of disparity: widening ethnic mortality gaps from 1980 to 1999.

Tony Blakely, Shilpi Ajwani, Bridget Robson, Martin Tobias, Martin Bonné

The New Zealand Medical Journal | Published : 2004


BACKGROUND: Maori and Pacific deaths were severely undercounted in the mid-1980s and first half of 1990s, resulting in numerator-denominator bias when calculating mortality rates by ethnicity. We used the New Zealand Census-Mortality Study to adjust for this bias and calculate corrected ethnic-specific mortality rates from 1980 to 1999. METHODS: Age-specific adjusters were calculated for the period 1980-99. They were applied to mortality data to obtain a corrected number of deaths. Mortality rates (by age and gender) were calculated by dividing the total number of adjusted deaths by the respective census counts. RESULTS: Contrary to unadjusted rates, corrected Maori and Pacific mortality rat..

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