Cancer Incidence and Incidence Rates in Japan in 2000: Estimates Based on Data from 11 Population-Based Cancer Registries

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Abstract
The Japan Cancer Surveillance Research Group estimated the cancer incidence in Japan in 2000 on the basis of data collected from 11 population-based cancer registries: Miyagi, Yamagata, Chiba (model area), Kanagawa, Niigata, Fukui, Shiga, Osaka, Okayama, Saga and Nagasaki. The methods of estimation and their limitations have been explained in previous papers (1–3). Our research group succeeded the Research Group for Population-based Cancer Registration in Japan that has estimated the cancer incidence from 1975 to 1999. The number of incidences, crude rates, age-standardized rates and completeness of registration in 2000 are shown in Table 1, and the age-specific number of incidences and the rates according to sex and primary site are shown in Tables 2 and 3. The total number of incidence in Japan for 2000 was estimated as 538 000. The time trends of age-standardized incidence rates for the major sites in 1975–2000 are shown in Fig. 1 (standard population: the world population) and in Fig. 2 (standard population: the 1985 Japanese model population). The leading site according to the age-standardized incidence rates was stomach for males and breast for females, as shown in Figs 1 and 2.

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