Long-term ozone exposure and the risk of mortality in sepsis patients in a Chinese cohort

Background Air pollution is increasingly recognized as an important environmental risk factor for sepsis patients. However, previous studies have mostly focused on particulate matter, and few have explored the mortality risk associated with long-term ozone exposure among patients with sepsis, especially in China. Materials and methods A cohort of patients with sepsis was recruited from 13 prefecture-level cities in Hunan Province, China. Annual mean ozone concentrations were obtained from a high