Assessing Impact of Household Intervention on Indoor Air Quality and Health of Children with Asthma in the US-Mexico Border: A Pilot Study
Table 4
Outdoor PM2.5 and ozone levels in McAllena during the study period for each household.
HH
PM2.5 (μg/m3)
Ozone (ppm)
Days 1–7
Days 9–15
Days 1–7
Days 9–15
1
10.3
(3.6)
11.1
(3.4)
0.028
(0.009)
0.029
(0.011)
2
10.4
(3.5)
10.5
(3.9)
0.034
(0.012)
0.025
(0.005)
3
13.6
(2.2)
12.8
(4.5)
0.020
(0.003)
0.026
(0.003)b
4
13.6
(2.2)
12.8
(4.5)
0.020
(0.003)
0.026
(0.003)b
5
11.8
(4.4)
13.9
(3.1)
0.020
(0.003)
0.025
(0.004)b
6
6.0
(1.1)
7.6
(3.4)
0.034
(0.008)
0.029
(0.004)
7
7.0
(2.3)
6.2
(1.6)
0.032
(0.009)
0.030
(0.004)
8
8.4
(3.4)
6.1
(1.7)
0.033
(0.009)
0.030
(0.004)
9
8.4
(3.4)
6.1
(1.7)
0.033
(0.009)
0.030
(0.004)
10
5.8
(2.0)
7.3
(2.0)
0.033
(0.008)
0.033
(0.009)
11
5.3
(1.6)
7.1
(2.0)
0.030
(0.008)
0.035
(0.009)
12
5.3
(1.6)
7.1
(2.0)
0.030
(0.008)
0.035
(0.009)
13
6.9
(1.5)
4.8
(1.8)
0.031
(0.009)
0.037
(0.005)
Source: Outdoor Air Quality Data, US Environmental Protection Agency (https://www.epa.gov/outdoor-air-quality-data/download-daily-data). Note. The two-sample t-test was used to test the difference of concentrations between Days 1–7 and Days 9–15 within each household. Expressed in mean of daily measurements (SD); a McAllen-Edinburg-Mission, TX. b Significant at .
