Table IV.
Inter-individual Variability in Estimated Residential Microenvironmental Exposures for Default and Updated Data for Smoking Prevalence and Cigarette Emission Ratea
| Input Data | SHEDS-PM Model Output for Inter-Individual Variability in Daily Average Exposure to PM2.5 |
||||
|---|---|---|---|---|---|
| 50th Percentile (μg/m3) |
90th Percentile (μg/m3) |
99th Percentile (μg/m3) |
Mean (μg/m3) |
Std.Dev. (μg/m3) |
|
| Default Inputsb | 6.7 | 29 | 79 | 12 | 16 |
| Updated Inputsc | 6.0 | 31 | 100 | 13 | 21 |
a
Simulation assumptions: 100,000 individuals, 10 census tracts in Wake County, NC; same random seeds are used in both simulations; ambient PM2.5 concentration data were based on hourly data from July 1, 2002 to July 30, 2002 from the output of the CMAQ air quality model.
b
The proportions of smokers and “other smokers” in 1995 are approximately 23% and 31%, respectively. Ecig=10.9 mg/cig.
c
The proportions of smokers and “other smokers” in 2007 are approximately 18% and 28%, respectively. Ecig=13.8 mg/cig.