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Table 1 Descriptive statistics of the study population (n = 18)

From: Exposure to traffic-related air pollution and changes in exhaled nitric oxide and DNA methylation in arginase and nitric oxide synthase in children with asthma

Characteristic

Measure

Age (years, mean ± SD)

10.6 ± 1.7

Male n(%)

13 (72.2)

Race/ethnicity n(%)

 African American

5 (27.8)

 Hispanic

10 (55.6)

 White

3 (16.6)

Maternal education n(%)

  < High school

2 (12.5)

 High school graduate

9 (56.3)

 Some college

5 (31.2)