© The Author (2008). Published by Oxford University Press. All rights reserved
Comparison of Time Trends in Cancer Incidence (1973–2002) in Asia, from Cancer Incidence in Five Continents Vols IV–IX
Cancer Information Services and Surveillance Division
Center for Cancer Control and Information Services
National Cancer Center
Tokyo, Japan
Time trends of age-standardized rate (ASR) of cancer incidence (ICD-10: C00–C96) were compared among 13 selected cancer registries and ethnic/racial groups in Asia. Data source was the Cancer Incidence in Five Continents Vols IV–IX (year at diagnosis 1973–77, 1978–82, 1983–87, 1988–92, 1993–97 and 1998–2002, respectively). World population was used for age-standardization. Asia was divided following three areas, Eastern Asia, South-Eastern Asia and South-Central and Western Asia. China and Japan were in Eastern Asia, Philippines, Singapore and Thailand were in South-Eastern Asia and India, Israel and Kuwait were in South-Central and Western Asia.
Figure 1 shows time trends of ASR of cancer incidence for males. In East Asia, Hong Kong in China has been increasing till 1983–87 and has kept the highest ASR till 1988–92. The two registries (Miyagi and Osaka) in Japan showed an increasing trend from 1973–77 to 1993–97 and Miyagi kept stable while Osaka showed a little decreasing from 1993–97 to 1998–2002. Shanghai (China) showed a decreasing trend till 1993–97 and showed an increasing trend after that. In South-East Asia, the highest ASR after 1990s is Chinese in Singapore followed by Manila in Philippine, Malay in Singapore, Chiang Mai in Thailand and Indian in Singapore. Chinese in Singapore showed a gradual decreasing. In South-Central and Western Asia, Jews in Israel has the remarkably high ASR and it has increased all over observed period. Though Kuwait had the lowest ASR in Asia in 1978–82, its ASR became same as that in India in the recent period (1998–2002).
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Figure 2 shows time trends of ASR of cancer incidence for females. In East Asia, Hong Kong has kept highest ASR all over the period nevertheless it has been decreasing since 1983–87. In the recent period, the second highest ASR was Miyagi (Japan) and followed by Shanghai (China) and Osaka (Japan). The increasing trends in Miyagi since 1973–77 and in Shanghai since 1983–87 were observed, while the gradual decreasing trend in Osaka since 1983–87 was observed. In South-East Asia, Manila (Philippine) and Chinese in Singapore had the highest ASR. Indian in Singapore has shown as high as Chinese in Singapore till 1978–82 but the ASR was getting down and got to the lowest in South-East Asia in 1998–2002. ASR in Malay (Singapore), which showed the lowest ASR in 1973–77, has kept increasing and it became the same as that in Chiang Mai (Thailand). In South-Central and Western Asia, the ASRs in Mumbai and Chennai (India) have been similar; however, the gradual decreasing trend was observed in Mumbai since 1978–82 and leveling off in Chennai since 1983–87. ASR of Jews in Israel has been apparently high compared with other registries as well as Males and it has increased more since 1983–87. Kuwait, which had the lowest ASR in 1978–82 and 1998–2002 in Asia, showed increased much till 1983–87.
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