Long-term exposure to PM_2.5 and incidence of disability in activities of daily living among oldest old.

ABSTRACT: Currently the Chinese government has adopted World Health Organization interim target-1 values as the national ambient air quality standards values. However, the population-based evidence was insufficient, especially for the oldest old (aged 80+). We evaluated the association of fine particulate matters (PM_2.5) exposure and incidence of disability in activities of daily living (ADL) in 15 453 oldest old in 886 counties/cities in China from 2002 to 2014 using Cox model with penalized splines and competing risk models to evaluate the linear or non-linear association. After adjusting for potential confounders, a J-shaped association existed between PM_2.5 exposure with a threshold concentration of 33 μg/m³, and incident disability in ADL. Above this threshold,

SUBMITTER: Lv Y 

PROVIDER: S-EPMC7261238 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature