Exposure-Response Relationship between Particulate Pollution Level and Hospital Outpatient Visits in Taiyuan
- VernacularTitle:太原市颗粒物空气污染与居民每日门诊率的暴露-反应关系
- Author:
Yanping ZHANG
;
Jinfen LI
;
Zhiqin ZHANG
- Publication Type:Journal Article
- Keywords:
Particulate matter;
Air pollution;
Outpatients
- From:
Journal of Environment and Health
1989;0(06):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the exposure-response relationship between particulate pollution level and hospital outpatient visits. Method From 2001 to 2005,daily outpatient visits data were from a municipal hospital in Taiyuan,meteorological data and air pollution data were from Taiyuan Meteorological Bureau and Taiyuan Environmental Monitoring Station respectively. Poisson Generalized Additive Model(GAM)) extended Poisson regression was used to examine the relationship between particulate pollution level and hospital outpatient visits,controlling with time trends,weather and the day of week. According to the shape of exposure-response relationship curve,piecewise linear regression was used for risk analysis. Results From 2001 to 2005,the average concentration of PM10 was 190.41 ?g/m3,the average number of daily hospital outpatient visits was 18.31 to the respiratory department,and 23.99 to the cardiovascular department. Exposure-response relationship analysis suggested a nonlinear positive correlation between PM10 and daily hospital outpatient visits. A larger increase in daily hospital outpatient visits was observed at lower concentration of PM10 than that at higher concentration. When PM10 increased 10 ?g/m3,respiratory outpatient visits increased 0.260 1%-0.917 8% and respiratory outpatient visits increased 0.208 3%-0.402 7%. The estimated effects of 2 or 3 days moving average of PM10 concentration were greater than that of concurrent day. The stronger effect of PM10 was found on respiratory outpatient visits,which was statistically significant. Conclusion PM10 may produce effect on respiratory outpatient visits.
