Abstract
The 1962-66 cancer mortality of Polish migrants to Australia is compared with the cancer mortality prevailing in Poland and in Australia. Small numbers compel to limit the analysis to the most frequent cancer sites only.The main findings are:(a) Stomach cancer mortality of Polish migrants to Australia is intermediate between the high mortality in Poland and the much lower one in Australia.(b) Intestinal tract and breast cancer mortality of Polish migrants is displaced upwards, from the low Polish level to the much higher Australian one.(c) Lung cancer mortality of Polish male migrants does not differ distinctly from the mortality observed both in the country of origin and of adoption of these migrants.The presented findings are compared with the results of a similar study of Polish migrants to the U.S. Aims for future studies are briefly outlined.
Highlights
(a) Stomach cancer mortality of Polish migrants to Australia is intermediate between the high mortality in Poland and the much lower one in Australia
For males the age-adjusted rates are lower in Polish migrants to Australia than the rates prevailing in their country of adoption, even if higher than in Poland
A review of cancer mortality among Polish migrants to Australia corroborates some of the findings described for Polish-born Americans: displacement of the risk from the low level in Poland to the high level in the host country for intestinal tract cancer and for breast cancer
Summary
Whereas the bulk of Polish migration to the United States, which took place before the Second World War (before 1925), consisted of the lowest socio-economic classes, mainly landless peasants, and was due to economic motives, Polish migrants to Australia came mostly after the Second World War, were of higher socio-economic classes than migrants to the U.S, and left Poland mainly because of the war. This selection of migrants may have some bearing on their cancer risks, because such risks are known to display strong socio-economic and urban-rural gradients. TABLEI.-Deaths from Cancer of Most Frequent Primary Sites in Polish Migrants in Australia, 1962-66
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