Changes in Spanish surname cancer rates relative to other whites, Denver area, 1969-71 to 1979-81.

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Abstract
Cancer incidence rates for persons of Spanish surname and other Whites in the Denver, Colorado area were derived for two time periods, 1969-71 and 1979-81. The substantial deficits in total cancers for Spanish surname males and females relative to other Whites in 1969-71 diminished considerably for all age groups by 1979-81. The major determinants of this pattern were the rapidly rising Spanish surname rates for cancer of the colon and rectum, lung cancer, kidney cancer, female breast and uterine cancers, and male prostate, bladder, and hematopoietic cancers. There was a convergence of Spanish surname rates toward the other White rates for nearly all sites, regardless of whether other Whites showed increasing, decreasing, or stable rates. Notable exceptions occurred for cervical cancer, which dropped more slowly among persons of Spanish surname than among other Whites, and Spanish surname female stomach cancer rates which rose during the 1970s in contrast to a decrease among other Whites. The overall pattern is consistent with acculturation of persons of Spanish surname towards the majority's lifestyle, suggesting the value of more detailed studies of specific cancer determinants in the Spanish surname population.