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Identifying Rural Hotspots for Head and Neck Cancer Using the Bayesian Mapping Approach.

Poornima Ramamurthy1, John Adeoye2, Siu-Wai Choi2

  • 1College of Medicine and Dentistry, James Cook University, Smithfield, QLD 4878, Australia.

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|March 13, 2025
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Summary

Bayesian mapping identified higher head and neck cancer (HNC) risks in rural Australian communities. This approach effectively highlights at-risk populations for targeted prevention programs and further investigation.

Keywords:
Bayesian mappingcancerepidemiologyrural and remote

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Area of Science:

  • Epidemiology
  • Spatial Analysis
  • Public Health

Background:

  • Head and neck cancer (HNC) hotspots in Australia have not been previously identified using Bayesian mapping.
  • Rural communities face unique challenges in cancer prevention and management.

Purpose of the Study:

  • To identify rural and remote communities at elevated risk for head and neck cancer (HNC) in Australia.
  • To utilize Bayesian disease mapping for targeted HNC prevention strategies.

Main Methods:

  • Analysis of 23,853 head and neck cancer cases from the Queensland Cancer Register (1982-2018).
  • Bayesian mapping of HNC incidence and mortality (overall, 3-year, 5-year) across Local Government Areas (LGAs).
  • Utilized 2016 Australian Bureau of Statistics census data for population demographics.

Main Results:

  • Identified 59 LGAs with higher-than-average HNC risk; 22 were predominantly rural/remote.
  • Statistically significant higher risks of HNC occurrence were observed in these rural/remote LGAs.
  • Median standardized mortality ratios (SMRs) exceeded the state average in 38 LGAs, with Quilpie, Yarrabah, Murweh, and Hinchinbrook showing the highest mortality.

Conclusions:

  • Bayesian disease mapping is effective for identifying high-risk communities for head and neck cancer.
  • Rural and remote regions exhibiting higher HNC risks warrant further investigation.
  • Findings support the design of targeted screening, interventions, and support services, like cancer navigators, for regional and remote populations.