Table 2.
Multivariate Analysis of Adiposity Indicators and Markers of Asthma Severity or Control, Stratified by FeNO Level
| BMI z Score | PBF z Score | WC z Score | |
|---|---|---|---|
| FeNO < 20 ppb (n = 86) | |||
| ≥1 EC visit in past year | 0.64 (0.39–1.07) | 0.64 (0.36–1.13) | 0.63 (0.34–1.16) |
| >1 wk of school days lost in past year | 1.03 (0.69–1.52) | 0.84 (0.51–1.39) | 0.81 (0.48–1.35) |
| Limited activity in past year | 0.90 (0.61–1.31) | 0.72 (0.48–1.08) | 1.05 (0.70–1.56) |
| FeNO ≥ 20 ppb (n = 85) | |||
| ≥1 EC visit in past year | 2.44 (1.18–5.06)* | 2.83 (1.26–6.35)* | 2.15 (0.96–4.81) |
| >1 wk of school days lost in past year | 2.75 (1.19–6.38)* | 4.70 (1.89–11.66)† | 1.62 (0.69–3.79) |
| Limited activity in past year | 0.80 (0.39–1.65) | 0.83 (0.44–1.56) | 0.68 (0.32–1.47) |
Definition of abbreviations: BMI = body mass index; EC = emergency care; FeNO = fractional exhaled nitric oxide; PBF = percent body fat; WC = waist circumference.
Results are shown as odds ratio (95% confidence interval) per 1.0 z score increment in each adiposity measure. All models adjusted for age, sex, race and ethnicity, family history of asthma, annual household income, use of oral or inhaled steroids, and environmental tobacco smoke exposure.
*
P < 0.05.
†
P < 0.01.