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Time trends of age-standardized rate (ASR) of cancer incidence (ICD-10: C00-C96) were compared among 18 selected cancer registries and ethnic/racial groups in Asia, Europe, and USA. Background information of selected cancer registries was shown in Table 1. Data source was the Cancer Incidence in Five Continents Vol. IV–VIII (year at diagnosis: 1973–77, 78–82, 83–87, 88–92, and 93–97, respectively). World population was used for age-standardization.

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Figure 1 shows time trends of ASR of cancer incidence for males. In East Asia, the three registries (Miyagi, Nagasaki, and Osaka) in Japan showed an increasing trend from 1973–77 to 1993–97. Shanghai (China) showed a decreasing trend, while Hong Kong (China) showed an increase until the period 1983–87 and then decreased. In the most recent period (1993–97), Nagasaki showed higher ASRs and Shanghai (China) showed lower ASRs compared with the other registries in East Asia. In Europe, Bas-Rhin (France), Varese (Italy), Denmark, and West Midlands (England) showed an increasing trend, and the increase seemed to be slowing down recently. South Thames (England) showed no clear change and Sweden showed a slow increase. In the most recent period (1993–97), those registries in Europe can be grouped into three; Bas-Rhin (France) and Varese (Italy) are high, Denmark and West Midlands (England) are middle, and South Thames (England) and Sweden are low ASR groups. In USA, black (SEER) showed a sharp increase, while white (SEER) showed an increase until the period 1988–92 and then decreased. Note that a previously reported peak in ASR of cancer incidence for US black and white (in 1992 for white, in 1993 for black) (1) was not observed in this report, since the incidence rates were averaged across five years. East Asian people in USA (Hawaii and Los Angels) showed an increasing trend except for Chinese in LA, which showed a slow decrease recently. Black in USA consistently showed higher ASRs than white and East Asian people in USA. White in USA showed consistently higher ASRs than East Asian people in USA.

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