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Researchers analyzed World Health Organization data from 33 countries between 1985 and 2015. Melanoma death rates in men were increasing in all but one nation.
In all 33 countries, melanoma death rates were higher for men than for women, the study found.
Between 2013 and 2015, the highest three-year averages were in Australia (5.72 melanoma deaths for every 100,000 men and 2.53 per 100,000 in women) and in Slovenia (3.86 per 100,000 for men and 2.58 in women).
Japan had the lowest rate of melanoma deaths, 0.24 per 100,000 for men and 0.18 for women, researchers reported.
The Czech Republic was the only country with a decrease in men's melanoma death rate, with an estimated annual drop of 0.7 percent between 1985 and 2015.
Israel and the Czech Republic had the largest decreases among women, 23.4 percent and 15.5 percent respectively, over the period, according to the study.
The findings are being presented at the United Kingdom's National Cancer Research Institute (NCRI) annual conference, in Glasgow, Scotland, Nov. 4-6.
More research is needed to understand factors underlying the trends, according to study author Dr. Dorothy Yang, a doctor at the Royal Free London NHS Foundation Trust.
"There is evidence that suggests men are less likely to protect themselves from the sun or engage with melanoma awareness and prevention campaigns. There is also ongoing work looking for any biological factors underlying the difference in mortality rates between men and women," Yang said in a meeting news release.
"The major risk factor for melanoma is overexposure to ultraviolet radiation, either from sun exposure or from using sunbeds. Despite public health efforts to promote awareness of melanoma and encourage sun-smart behaviors, melanoma incidence has been increasing in recent decades," she said.
Poulam Patel, chairman of the NCRI Skin Cancer Clinical Studies group, said effective strategies are needed to accurately diagnose and successfully treat patients. The study results suggest melanoma will continue to be a health issue, he said.
Research presented at meetings is typically considered preliminary until published in a peer-reviewed journal.
-- Robert Preidt
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SOURCE: U.K. National Cancer Research Institute, news release, Nov. 4, 2018