Time trends of age-standardized rate (ASR) of prostate cancer incidence (ICD-10: C61) 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 into 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 prostate cancer incidence. Manila (Philippines) and Jews in Israel had higher ASRs than other registries all through the observation period, whereas Shanghai (China), Chiang Mai (Thailand) and Chennai (India) showed comparatively low ASRs. There was an overall increasing trend in all three Asian areas, except in Mumbai (India) where no obvious increase and decrease was observed. In all the registries, except Chiang Mai (Thailand) and the two registries in India and Kuwait, ASRs have been increasing since 1988–92. Above all, Israel demonstrated a peculiar transition; the ASR was originally high ∼15–20 in 100 000 from the beginning of the observation period, and increased suddenly up to two or three times.