Effects of Environmental Factors on Population Health:Measurement and Assessment
- VernacularTitle:环境因子对人群健康影响的测量与评估方法
- Author:
Zhuang TAO
;
Gonghuan YANG
- Publication Type:Journal Article
- Keywords:
Environmental pollution;
Environmental factors;
Comparative risk assessment;
Potential impact fraction(PIF);
Accumulate exposure;
Spatial interpolation;
Counterfactual analysis
- From:
Journal of Environment and Health
1992;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To establish a new method for assessing the effects of environmental factors on human health.Methods Based on the environment part of the frame for comparative risk assessment(CRA) of WHO,the frame and index system for environmental contamination risk assessment which accorded with the situation in China was developed.With the prevalence of different exposure level,RR and the choice of counterfactual scenario,the potential impact fraction(PIF) was estimated.Then an example on the study of liver cancer related with water pollution was used to show the new frame.In this example,the contaminated water was regarded as the environmental factor,incidence of liver cancer was regarded as variable of health,and the analysis was performed with spatial interpolation,counterfactual analysis and CRA theory.Results The quantity of COD of river water in this area was estimated with ordinary Kriging interpolation,and the accumulated exposure of COD was calculated with the trend of annual COD,and the number of population exposed to COD was estimated at same time.In accordance with the different level of pollution and the RR relate to liver cancer,the trend with monotonically increasing showed.At same time,the values of PIF illuminated that 75.72% in male and 66.39% in female would avoid death for liver cancer if the level of contaminated water could be reduced to the level of the control areas.Conclusion The frame includes CRA,spatial analysis and counterfactual analysis is a good approach to assess the health effects of environmental factors.
