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Table 1 Distribution of selected characteristics of the children

From: Trace metal exposure is associated with increased exhaled nitric oxide in asthmatic children

Demographics

 

Median age (range), in years

9.9 (8 – 13)

Gender, no. (%)

 Males

49 (70)

 Females

21 (30)

Race, no. (%)

 Caucasian

48 (69)

 Black

12 (17)

 Other

10 (14)

Health status

Allergies, no. (%)

49 (70)

Hay fever, no. (%)

17 (25)a

Eczema before age 2, no. (%)

21 (31)b

Asthma attack in previous 12 months, no. (%)

32 (46)

Parental asthma, no. (%)

40 (57)

Medication use during monitoring

 Corticosteroids, no. (%)

34 (49)

 Rescue medication (short acting beta-agonist), no. (%)

23 (33)

Median FeNO (IQR), in μL/L

26.6 (23.5)

  1. Note: a missing information for 3 children
  2. b missing information for 2 children