Trends in colorectal cancer mortality by ethnicity and socio-economic position in New Zealand, 1981-99: one country, many stories.
Caroline Shaw, Tony Blakely, Diana Sarfati, Jackie Fawcett, Jo Peace
Aust N Z J Public Health | Published : 2006
BACKGROUND: Ethnicity and socio-economic position are important determinants of colorectal cancer (CRC) mortality. In this paper, we determine trends in colorectal cancer mortality by ethnicity and socio-economic position in New Zealand. METHODS: Cohort studies of the entire New Zealand population for 1981-84, 1986-89, 1991-94 and 1996-99 (linking Census and mortality datasets) allowed direct determination of trends in CRC mortality by income and education. For ethnicity, we used routine unlinked Census and mortality data, but with correction factors applied for undercounting of Mâori and Pacific deaths. RESULTS: ETHNICITY: CRC mortality trends varied markedly. There were small (10-20%) decr..View full abstract