Statistical Methods
Means and standard deviations (SD) are reported for the entire cohort and stratified by gender. Proportions were compared using chi-square tests and unpaired t-tests were used to compare means between groups. Obese patients (BMI > 95thpercentile for age) were compared to patients with normal BMI (5th to < 85thpercentile). Pulmonary function tests were graphed against age, in years. Percent changes in the ratio of FEV1/FVC were compared for differences between children with asthma and healthy children as previously reported, as well as between obese children and children with a BMI within the normal range. Two-sided p values were considered statistically significant. Statistical analyses were performed using STATA 15.0 (Statacorp LLC, TX, USA).