Articles: mortality.
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Controversy remains regarding the relationship between ambient ozone and mortality worldwide. In mainland China, the largest developing country, there has been no prior study investigating the acute effect of O3 on death risk. Given the changes in types of air pollution from conventional coal combustion to the mixed coal combustion/motor vehicle emissions in China's large cities, it is worthwhile to investigate the acute effect of O3 on mortality outcomes in the country. ⋯ O3 pollution has stronger health effects in the cold than in the warm season in Shanghai. Our analyses also strengthen the rationale for further limiting levels of O3 pollution in outdoor air in the city.
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After a steady increase since the 1950s, laryngeal cancer mortality had tended to level off since the early 1980s in men from most European countries. To update trends in laryngeal cancer mortality in Europe, age-standardized (world standard) mortality rates per 100,000 were derived from the WHO mortality database for 33 European countries over the period 1980-2001. Jointpoint analysis was used to identify significant changes in mortality rates. ⋯ Laryngeal cancer mortality was comparatively low in women from most European countries, with stable rates around 0.3/100,000 in the EU as a whole over the last 2 decades. Laryngeal cancer trends should be interpreted in terms of patterns and changes in exposure to alcohol and tobacco. Despite recent declines, the persistence of a wide variability in male laryngeal cancer mortality indicates that there is still ample scope for prevention of laryngeal cancer in Europe.
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Although morbidity is high in prisoners compared with the general population, uncertainty exists over rates for natural causes of death. We investigated natural deaths in prisons in England and Wales over a 20-year period. ⋯ There are important methodological challenges in calculating SMRs in prisoners. Bearing these in mind, we found increased mortality ratios for respiratory pneumonia and other infections. These findings highlight the need for the screening and effective treatment of infectious diseases in prisoners.
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Comparative Study
Evaluating an emergency medical services-initiated nontransport system.
To evaluate both factors predicting nontransport and mortality rates in an emergency medical services system with a nontransport policy. ⋯ Age is a determinant when deciding on transporting patients. Patients with complaints with potentially higher acuity were transported most often. Only two nontransported patients died within 30 days, although it is unknown whether initial transport would have changed their mortality. Our data suggest that emergency medical services-initiated nontransport is influenced only by age and chief complaint and may not result in significant mortality.