An Interview with Eiko Otake

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Population health and regional variations of disease burden in Japan, 1990–2015:a systematic subnational analysis for the Global Burden of Disease Study 2015

BackgroundJapan has entered the era of super-ageing and advanced health transition, which is increasingly putting pressure on the sustainability of its health system. The level and pace of this health transition might vary across regions within Japan and concern is growing about increasing regional variations in disease burden. The Global Burden of Diseases, Injuries, and Risk Factors Study 2015 (GBD 2015) provides a comprehensive, comparable framework. We used data from GBD 2015 with the aim to quantify the burden of disease and injuries, and to attribute risk factors in Japan at a subnational, prefecture-level.MethodsWe used data from GBD 2015 for 315 causes and 79 risk factors of death, disease, and injury incidence and prevalence to measure the burden of diseases and injuries in Japan and in the 47 Japanese prefectures from 1990 to 2015. We extracted data from GBD 2015 to assess mortality, causes of death, years of life lost (YLLs), years lived with disability (YLDs), disability-adjusted life-years (DALYs), life expectancy, and healthy life expectancy (HALE) in Japan and its 47 prefectures. We split extracted data by prefecture and applied GBD methods to generate estimates of burden, and attributable burden due to known risk factors. We examined the prefecture-level relationships of common health system inputs (eg, health expenditure and workforces) to the GBD outputs in 2015 to address underlying determinants of regional health variations.FindingsLife expectancy at birth in Japan increased by 4·2 years from 79·0 years (95% uncertainty interval [UI] 79·0 to 79·0) to 83·2 years (83·1 to 83·2) between 1990 and 2015. However, the gaps between prefectures with the lowest and highest life expectancies and HALE have widened, from 2·5 to 3·1 years and from 2·3 to 2·7 years, respectively, from 1990 to 2015. Although overall age-standardised death rates decreased by 29·0% (28·7 to 29·3) from 1990 to 2015, the rates of mortality decline in this period substantially varied across the prefectures, ranging from -32·4% (-34·8 to -30·0) to -22·0% (-20·4 to -20·1). During the same time period, the rate of age-standardised DALYs was reduced overall by 19·8% (17·9 to 22·0). The reduction in rates of age-standardised YLDs was very small by 3·5% (2·6 to 4·3). The pace of reduction in mortality and DALYs in many leading causes has largely levelled off since 2005. Known risk factors accounted for 34·5% (32·4 to 36·9) of DALYs; the two leading behavioural risk factors were unhealthy diets and tobacco smoking in 2015. The common health system inputs were not associated with age-standardised death and DALY rates in 2015.InterpretationJapan has been successful overall in reducing mortality and disability from most major diseases. However, progress has slowed down and health variations between prefectures is growing. In view of the limited association between the prefecture-level health system inputs and health outcomes, the potential sources of regional variations, including subnational health system performance, urgently need assessment.FundingBill & Melinda Gates Foundation, Japan Ministry of Education, Science, Sports and Culture, Japan Ministry of Health, Labour and Welfare, AXA CR Fixed Income Fund and AXA Research Fund

Rate Constant and Anti-oxidative Activity toward Hydroxyl Radicals; UV Irradiation

The anti-oxidative activity toward hydroxyl radicals was expressed by the reaction rate constant. Rate constants were presented for basic organic substances and reducing reagents. Hydroxyl radicals were generated by UV-irradiation of hydrogen peroxide. The pH was controlled through the reaction in the range 6.5-7.0. The dependence on the concentration of anti-oxidative substances was so small that the validity of the theoretical analysis was guaranteed

What We Know and What We Want to Know: A Roundtable On Butoh and Neuer Tanz

The Routledge Companion to Butoh Performance provides a comprehensive introduction to and analysis of the global art form butoh. Originating in Japan in the 1960s, butoh was a major innovation in twentieth century dance and performance, and it continues to shape-shift around the world. Taking inspiration from the Japanese avant-garde, Surrealism,　Happenings, and authors such as Genet and Artaud, its influence can be seen throughout contemporary performing arts, music, and visual art practices. This Companion places the form in historical context, documents its development in Japan and its spread around the world, and brings together the theory and the practice of this compelling dance. The interdisciplinarity evident in the volume reflects the depth and the breadth of butoh, and the editors bring specially commissioned essays by leading scholars and dancers together with translations of important early texts