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.
ABSTRACT
Objective To explore the main affecting factors on sanitary quality of public places and to assess the sanitary quality scientifically. Methods The sanitary qualities of 6 kinds of public places of entertainment in Taiyuan during 1998～2000 were assessed using the method of compreheusive fuzzy assessmeat. Results All of 6 kinds of public places revealed similar sanitary qualities. All of the sanitary indexes accorded with the related National Sanitary Standards. The sanitary qualities were better for ballrooms, theaters, bar and billiard rooms in hotels with Grade Ⅰ quality, and were worse for tennis and bowling halls with Grade Ⅱ quality. The assessments on single index showed that the affecting factors of sanitary quality of public places of entertainment were the levels of CO2, noise and CO. Conclusion The sanitary quality of entertainment public places was better during 1998～2000.