title: [Association between particulate air pollution and daily respiratory and cardiovascular hospital admissions].
abstract: OBJECTIVE
  To establish concentration-response relationship model for high particulate air pollution and daily hospital admissions for early warning system.
  
  
  METHODS
  The Poisson generalized additive model was used with natural cubic spline smoothing for air pollutants of PM10, SO2, NO2, CO to determine the shape of concentration-response relationship. And piecewise linear regression was used for risk analysis.
  
  
  RESULTS
  Age-specific analysis suggested the non-linear association between particulate air pollution and hospital admissions in all age groups. In respiratory and cardiovascular admissions, the percentage increase was 0.716%-2.145% and 0.65% for 10 microg/m3 increase in PM10, respectively. Cause-specific analysis suggested the non-linear association between particulate air pollution and hospital admissions for all diseases. The significant association was found with COPD and ischaemic heart disease, and the related percentage increase was 2.94% and 1.94%, respectively. Heating and noheating period analysis suggested the effect of PM10 was higher in noheating period than that in heating period.
  
  
  CONCLUSIONS
  Compared with mortality, particulate air pollution should affect the hospital admissions more greatly, the percentage increase should be higher for hospital admissions than that of mortality (0.25%).
authors.affiliation: Taiyuan Municipal Center for Disease Control and Prevention, Taiyuan 030001, China.
authors.forename: Yan-ping
authors.initials: YP
authors.lastname: Zhang
authors.forename: Zhi-qin
authors.initials: ZQ
authors.lastname: Zhang
authors.forename: Jin-fen
authors.initials: JF
authors.lastname: Li
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000393:Air Pollutants / Q000009:adverse effects; D000397:Air Pollution; D002318:Cardiovascular Diseases / Q000453:epidemiology* / Q000401:mortality; D002648:Child; D002675:Child, Preschool; D004781:Environmental Exposure; D006760:Hospitalization; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008875:Middle Aged; D012140:Respiratory Tract Diseases / Q000453:epidemiology* / Q000401:mortality
chemical_list: D000393:Air Pollutants