Cancer patients in disadvantaged areas are dying at higher rates than those in privileged communities as differences in survivorship grow.

Medical advancements have significantly improved Australians' survival rates from one in two dying from cancer within five years in the 1980s, compared with one in four during the 2010s.

But these gains are not equally shared, according to research from the Daffodil Centre.

Between 1980 and 1989, the death rate of cancer patients living in the most disadvantaged parts of NSW was four per cent higher than those in the most advantaged areas.

By the 2010s, the difference had swelled to 35 per cent.

"There's a really big equity gap that demands urgent attention," author and Daffodil Centre research stream lead Julia Steinberg told AAP.

The study analy

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