TY - JOUR
T1 - Estimating cancer incidence in Indigenous Australians
AU - Zhang, Xiaohua
AU - Condon, John
AU - Rumbold, Alice
AU - Cunningham, Joan
AU - Roder, David
PY - 2011/10
Y1 - 2011/10
N2 - Objective: To assess data quality of cancer registrations for Indigenous Australians and produce reliable national Indigenous cancer incidence statistics. Methods: Completeness of Indigenous identification was assessed for the eight Australian cancer registries using an innovative indirect assessment method based on registry-specific registration rates for smoking-related cancers. National age-standardised incidence rates and rate ratios (Indigenous:non-Indigenous) were calculated for all cancers combined and 26 individual cancer sites. Multivariate regression analysis was used to investigate trends in Indigenous cancer incidence by time or remoteness of residence, and whether the incidence rate ratio (Indigenous:non-Indigenous) was different in younger than older age-groups. Results: Four registries covering 84% of the Indigenous population had sufficiently complete Indigenous identification to be included in analysis. Compared to other Australians, Indigenous Australians had much higher incidence of lung and other smoking-related cancers, cervix, uterus and liver cancer, but much lower incidence of breast, prostate, testis, colorectal and brain cancer, melanoma of skin, lymphoma and leukaemia. Incidence was higher in remote areas for some cancers (including several smoking-related cancers) but lower for others. The incidence rate ratios (IRRs) for smoking-related cancers were higher in younger than older people. Conclusions: Indigenous Australians have a different pattern of incidence of specific cancers than other Australians and large geographical variations for several cancers. Implications: All cancer registries need to further improve Indigenous identification, but national Indigenous cancer incidence statistics can, and should, be regularly reported. Tobacco control is a critical cancer-control issue for Indigenous Australians.
AB - Objective: To assess data quality of cancer registrations for Indigenous Australians and produce reliable national Indigenous cancer incidence statistics. Methods: Completeness of Indigenous identification was assessed for the eight Australian cancer registries using an innovative indirect assessment method based on registry-specific registration rates for smoking-related cancers. National age-standardised incidence rates and rate ratios (Indigenous:non-Indigenous) were calculated for all cancers combined and 26 individual cancer sites. Multivariate regression analysis was used to investigate trends in Indigenous cancer incidence by time or remoteness of residence, and whether the incidence rate ratio (Indigenous:non-Indigenous) was different in younger than older age-groups. Results: Four registries covering 84% of the Indigenous population had sufficiently complete Indigenous identification to be included in analysis. Compared to other Australians, Indigenous Australians had much higher incidence of lung and other smoking-related cancers, cervix, uterus and liver cancer, but much lower incidence of breast, prostate, testis, colorectal and brain cancer, melanoma of skin, lymphoma and leukaemia. Incidence was higher in remote areas for some cancers (including several smoking-related cancers) but lower for others. The incidence rate ratios (IRRs) for smoking-related cancers were higher in younger than older people. Conclusions: Indigenous Australians have a different pattern of incidence of specific cancers than other Australians and large geographical variations for several cancers. Implications: All cancer registries need to further improve Indigenous identification, but national Indigenous cancer incidence statistics can, and should, be regularly reported. Tobacco control is a critical cancer-control issue for Indigenous Australians.
KW - Aborigines
KW - Australian
KW - Cancer
KW - Cancer registration
KW - Data quality
KW - Incidence
UR - http://www.scopus.com/inward/record.url?scp=83155192364&partnerID=8YFLogxK
U2 - 10.1111/j.1753-6405.2011.00762.x
DO - 10.1111/j.1753-6405.2011.00762.x
M3 - Article
VL - 35
SP - 477
EP - 485
JO - Australian and New Zealand Journal of Public Health
JF - Australian and New Zealand Journal of Public Health
SN - 1326-0200
IS - 5
ER -