- 著者
- Dongmei Qiu Takeo Tanihata Hitoshi Aoyama Toshiharu Fujita Yutaka Inaba Masumi Minowa
- 出版者
- Japan Epidemiological Association
- 雑誌
- Journal of Epidemiology (ISSN:09175040)
- 巻号頁・発行日
- vol.12, no.3, pp.254-257, 2002 (Released:2007-11-30)
- 参考文献数
- 15
- 被引用文献数
- 18 19
In order to describe the relationship between mortality rate and extreme heat during the summer of 1999 in Hokkaido, we calculated the monthly age-adjusted death rates, average monthly mean temperature and average monthly high temperature for the years 1995 to 1999 in Hokkaido.The materials were derived from Statistics and Information Department, Minister's Secretariat, Ministry of Health, Labour and Welfare of Japan, Statistical Bureau Management and Coordination Agency Government of Japan and the Japan Meteorological Agency.Trends in the monthly age-adjusted death rates and temperature changes in the same period were analyzed. The highest average monthly high temperature for August and September (28.8°C and 23.8°C, respectively) occurred in 1999;the similar trend was observed in the highest average monthly mean temperature.In August 1999, there were 14 days with highest temperatures of 30°C and over.The age-adjusted rate in August 1999 was significantly higher compared with those for the years 1995 to 1998 (p<0.01).We concluded that an unusually hot spell in 1999 was followed by a high mortality rate in Hokkaido.J Epidemiol, 2002;12:254-257
- 著者
- Toshiro Tango Toshiharu Fujita Takeo Tanihata Masumi Minowa Yuriko Doi Noriko Kato Shoichi Kunikane Iwao Uchiyama Masaru Tanaka Tetsunojo Uehata
- 出版者
- 日本疫学会
- 雑誌
- Journal of Epidemiology (ISSN:09175040)
- 巻号頁・発行日
- vol.14, no.3, pp.83-93, 2004 (Released:2005-03-18)
- 参考文献数
- 33
- 被引用文献数
- 14 34
BACKGROUND: Great public concern about health effects of dioxins emitted from municipal solid waste incinerators has increased in Japan. This paper investigates the association of adverse reproductive outcomes with maternal residential proximity to municipal solid waste incinerators.METHODS: The association of adverse reproductive outcomes with mothers living within 10 km from 63 municipal solid waste incinerators with high dioxin emission levels (above 80 ng international toxic equivalents TEQ/m3) in Japan was examined. The numbers of observed cases were compared with the expected numbers calculated from national rates adjusted regionally. Observed/expected ratios were tested for decline in risk or peak-decline in risk with distance up to 10 km.RESULTS: In the study area within 10 km from the 63 municipal solid waste incinerators in 1997-1998, 225, 215 live births, 3, 387 fetal deaths, and 835 infant deaths were confirmed. None of the reproductive outcomes studied here showed statistically significant excess within 2 km from the incinerators. However, a statistically significant peak-decline in risk with distance from the incinerators up to 10 km was found for infant deaths (p=0.023) and infant deaths with all congenital malformations combined (p=0.047), where a “peak” is detected around 1-2 km.CONCLUSION: Our study shows a peak-decline in risk with distance from the municipal solid waste incinerators for infant of deaths and infant deaths with all congenital malformations combined. However, due to the lack of detailed exposure information to dioxins around the incinerators, the observed trend in risk should be interpreted cautiously and there is a need for further investigation to accumulate good evidence regarding the reproductive health effects of waste incinerator exposure.