Air pollution and hospital admissions for cardiovascular disease in Tucson.

摘要: Several recent studies have reported associations between short-term changes in both inhalable particles (PM10) and carbon monoxide cardiovascular hospital admissions. Here, I seek to replicate those findings a location where sulfur dioxide concentrations are low poorly correlated with PM10, PM10 peak the winter when ozone is lowest. This setting allows opportunity separate effects of different air pollutants. constructed daily counts admissions all hospitals Tucson, AZ, for disease (International Classification Diseases, 9th revision, codes 390-429) persons age 65 years older. analyzed these admission Poisson regression, on temperature, humidity, day week indicators, pollution. removed long wavelength patterns using nonparametric smooth function study. used regression splines model possible nonlinearities dependence weather. then examined sensitivity analyses control Both were associated increased risk Admissions by 2.75% [95% confidence limits (CL) = 0.52%, 5.04%] an interquartile range increase (23 micrograms per m3) 2.79% (95% CL 0.51%, 5.41%) (1.66 parts million) monoxide. These independent additive. In contrast, saw little association [increase 0.14% -1.3%, 1.6%) exposure], 0.54% -2.3%, 3.45%)], or nitrogen 0.69% 3.8%)]. The pollution insensitive potential interaction temperature humidity more than 1 day.