Journal of Environmental and Public Health / 2010 / Article / Tab 2

Research Article

Time-Location Patterns of a Population Living in an Air Pollution Hotspot

Table 2

Time spent in microenvironments (hour) by subject type, season and day-type in the WFS and CDS neighborhoods.

CategorySummerWinter
WeekdayWeekendWeekdayWeekend
MeanSDMed95th %MeanSDMed95th %MeanSDMed95th %MeanSDMed95th %

School Children( 𝑁 = 28)( 𝑁 = 25)( 𝑁 = 30)( 𝑁 = 29)
 Home17.83.817.624.019.14.120.424.016.33.715.624.016.84.717.022.6
 Work/School0.00.00.00.00.00.00.00.03.83.83.88.00.51.60.05.1
 Outdoors in the neighborhood4.23.53.610.63.44.21.111.51.82.71.010.03.42.82.98.6
 Total in the neighborhood22.32.824.024.022.72.724.024.022.12.924.024.021.54.024.024.0
 Total indoors18.33.918.024.019.34.120.424.020.83.021.824.018.93.720.023.0
 Total outdoors5.33.75.711.04.14.12.911.52.72.91.910.04.13.23.410.6
 Total in-vehicle(s)0.40.90.02.50.61.90.03.30.51.10.03.31.02.30.06.0

Employed Adults( 𝑁 = 27)( 𝑁 = 27)( 𝑁 = 23)( 𝑁 = 21)
 Home14.95.614.024.017.36.019.024.015.75.617.222.017.83.417.822.6
 Work/ S c h o o l ( a ) 1.93.60.09.00.31.30.02.02.74.00.99.50.41.70.00.2
 Outdoors in the neighborhood3.04.31.910.62.43.11.67.42.02.31.06.01.62.60.05.8
 Total in the neighborhood19.34.520.024.020.84.723.024.019.16.521.924.020.12.920.024.0
 Total indoors18.14.718.524.019.04.220.024.019.62.719.723.518.53.618.723.0
 Total outdoors4.14.64.011.53.83.92.812.03.12.82.66.23.93.82.012.0
 Total in-vehicle(s)1.82.01.35.51.21.50.84.31.31.41.03.81.61.90.95.0

Unemployed Adults( 𝑁 = 34)( 𝑁 = 32)( 𝑁 = 30)( 𝑁 = 29)
 Home18.04.118.324.017.84.818.424.019.74.320.324.019.04.120.024.0
 Work/ S c h o o l ( b ) 0.00.00.00.00.00.00.00.01.12.50.06.70.41.50.03.0
 Outdoors in the neighborhood3.52.93.49.52.93.21.79.01.82.50.46.52.02.61.07.7
 Total in the neighborhood22.32.524.024.021.63.223.024.022.43.724.024.021.93.124.024.0
 Total indoors18.83.718.924.018.84.119.124.021.23.222.824.020.23.321.024.0
 Total outdoors4.73.74.610.74.63.93.712.52.43.01.07.73.12.92.810.0
Total in-vehicle(s)0.50.90.02.90.71.40.03.20.40.70.01.90.71.70.05.5

Note: SD: standard deviation; Med: median, 95th%: the 95th percentile.
( a ) T h e median of time spent at work by employed adults was zero on weekday in summer, because some subjects’ jobs were temporary or seasonal, for example, school teacher.
( b ) U n e m p l o y e d adults include college students. Unemployed adults may also work temporarily.