[Change in mortality of gastric cancer from 1963 to 1981 in Shanghai urban residents].
Data of gastric cancer in Shanghai urban residents from 1963 to 1981 collected by Shanghai Cancer Registry are analysed as to the change in mortality with time. Results show that the crude mortality, both in male and female, was increasing from 1963 to 1977 and levels off after 1978. In contrast, the adjusted and truncated mortalities of the world population show a gradual decreasing pattern which has become more obvious after 1978. As compared to that of 1964 to 1966, the annual average adjusted mortality from 1979 to 1981 had decreased by 10.9% in the male and 18.2% in the female. In the female, rates of the various age groups declined while, in the male, it had decreased only in those under 69 of age while the rate of over 70 was still increasing. Factors which interfere with the time trend are elucidated and discussed.
D000328:Adult; D000368:Aged; D002681:China; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013274:Stomach Neoplasms / Q000401:mortality*; D013997:Time Factors; D014504:Urban Health