Effects of outdoor and indoor air pollution on respiratory health of Chinese children from 50 kindergartens.

ABSTRACT:

Background

Concentrations of ambient air pollution and pollutants in China have changed considerably during the last decade. However, few studies have evaluated the effects of current ambient air pollution on the health of kindergarten children.

Methods

We studied 6730 Chinese children (age, 3-7 years) from 50 kindergartens in 7 cities of Northeast China in 2009. Parents or guardians completed questionnaires that asked about the children's histories of respiratory symptoms and risk factors. Three-year concentrations of particles with an aerodynamic diameter ≤10 µm (PM10), sulfur dioxide (SO2), and nitrogen dioxides (NO2) were calculated at monitoring stations in 25 study districts. A 2-stage regression approach was used in data analyses.

Results

The prevalence of resp

SUBMITTER: Liu MM 

PROVIDER: S-EPMC3709542 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature