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Data sources, calculations and notes

The following information relates to the data shown on the Cancer type summaries for NSW and the Cancer Statistics NSW module.

Data sources

BreastScreen

BreastScreen Information System, BreastScreen NSW (population data sourced from Centre for Epidemiology and Evidence, NSW Ministry of Health).

Incidence and mortality 

Annual NSW cancer incidence and mortality data set, 2016, and the Institute Data Warehouse (both sourced from the NSW Cancer Registry). Population data are sourced from SAPHaRI (Centre for Epidemiology and Evidence, NSW Ministry of Health).

Projected incidence and mortality 

Annual NSW cancer incidence and mortality data set, 2015 (sourced from the NSW Cancer Registry). Population data are sourced from NSW Department of Planning and Environment 2016 final population projections.

Survival

NSW Cancer Registry data in Master Linked Dataset, linked to Australian Institute Health and Welfare National Death Index.

Data calculations

Cancer incidence and mortality

For more information on age-standardised rate, cancer incidence, cancer mortality, risk or 10-year trend calculations, refer to Appendix 4 of Cancer in NSW: Incidence and Mortality report 2010.

Projections

Cancer incidence and mortality projections are a mathematical extrapolation of past trends. They assume that the most recent trend will continue into the future, and are intended to illustrate future changes that might reasonably be expected to occur if the stated assumptions were to apply over the projection period.

The nature of the projection method used and inherent fluctuations in both cancer incidence and mortality trends and population dynamics mean that care should be taken when using and interpreting the projections presented.

Specifically, the projections are not forecasts and do not attempt to allow for changes which may affect future cancer incidence and mortality rates, including changes in risk factors and early detection methods.

Survival

For more information on survival rate calculations refer to Cancer survival in NSW 1995–2009.

Notes

BreastScreen

Breast screening participation rates shown here are expected to differ from figures of Health and Welfare for the same period, due to variations in the population projections used in the denominator. The participation rates presented here are based on the number of women who live in NSW and are screened in NSW. Interstate clients have been excluded.