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. Author manuscript; available in PMC: 2020 May 1.
Published in final edited form as: Sci Total Environ. 2019 Jan 24;663:408–417. doi: 10.1016/j.scitotenv.2019.01.309

Table 1:

Subject Characteristics (n=44)

Mean (SD) or %
Age (years) 12.3 (2)
Sex (male) 66.7%
Smoking (No) 100.0%
Height (cm) 164.1 (38.1)
Weight (kg) 57.8 (16.8)
Caucasian 48.9%
African-American 36.2%
Hispanic 14.9%
Smoking parents or other home occupants 21.3%
Living with at least one dog/cat (Yes) 68.0%
> $50000 household income 51.1%
> $40000 - $50000 household income 2.1%
> $30000 - $40000 household income 10.6%
> $20000 - $30000 household income 10.6%
> $10000 - $20000 household income 12.8%
< $10000 household income 12.8%

Subject experience of asthma symptoms/hospitalization due to asthma

Never within the last 12 months 6.5%
Rarely (less than once a month) 34.8%
Sometimes (1 – 4 times a month) 47.8%
Often (more than once a week but not daily) 10.9%
Proximity of homes to road (highway or interstate) Distance (m)
Minimum 26
First quartile (Q1) 135
Median 374
Mean 520
Third quartile (Q3) 504
Maximum 3867
SD 683