[Analysis of impact factors on children's neurobehavioral functions by answertree]

To explore the latent neurobehavioral function impairments by traffic exhausts and other factors on the children.

Two primary schools were chosen according to the air quality report in Beijing. School B is located at seriously exhausts polluted area while school A is at less polluted area. All children in grade three and grade four were selected as our objects. The survey was conducted based on the agreement of the children's parents. NES was employed to measure the children's neurobehavioral functions while the 24 hour NO2 and SO2 personal exposure levels, Zinc Protoporphyrin (ZZP) and CO levels in expiration gas were measured. Then, Answertree was used.

It is indicated that neurobehavioral functions of children were associated with the education level of children's mothers, children's personal COHb levels and personal SO2 exposure levels.

The children, whose mothers' education level were middle, with high personal COHb levels and SO2 exposure levels were the high risk population.