[ 英文摘要 ]
In the past, many studies found ambient fine particulate matter (PM2.5) increase the risk of disease and mortality. The aim of this study was to examin the adverse health effect of PM2.5 on life expectancy and healthy expectancy in Taiwan.
The PM2.5 concentrations of every township were calculated by Kringing method from 76 monitoring station in Taiwan Air Quality Monitoring Network. Based on the PM2.5 concentrations, townships were divided to high, middle, and low concentration area. The study population from 2005, 2009 National Health Interview Survey (NHIS) for whom 20-year-old to 90-year-old and complete risk factor data.Follow-up duration from interview data to death or alive to 2014. Sex- and age-specific life expectancy (LE) was estimated by multivariable Gompertz PH model and life-table method, sex- and age-specific healthy expectancy (HE) based on self-rated health was estimated by Sullivan’s method.
If other risk factors of high, middle, and low concentration area remain the same proportion, In middle concentration area, PM2.5 reduced LE by 0.751 years and HE by 0.936 years for male, also reduced LE by 0.665 years and HE by 0.565 years for female. In high concentration area, PM2.5 reduced LE by 0.760 years and HE by 0.943 years for male, also reduced LE by 0.638 years and HE by 0.545 years for female. Otherwise, if PM2.5 concentrations in Taiwan rise from low to middle, male would decrease 0.373 years LE and 0.638 years HE, female would decrease 0.309 years LE and 0.287 years HE; if PM2.5 concentrations in Taiwan rise from low to high, male would decrease 0.757 years LE and 0.942 years HE, female would decrease 0.627 years LE and 0.536 years HE.
There may exit potential important confounding factors we didn’t control, including race, income, etc. We provide the evidence of the health impact of PM2.5 on LE and HE in Taiwan, and it would be taken environmental policy as a reference in the future.