Linear mixed model parameter estimates of the effects of airflow resistance and the children’s characteristics on the inspiratory parameters.

PIF: peak inspiratory flow rate; FIR20–80%: flow increase rate; Vi: inhaled volume; ti: inhalation time.
aReference category is R5.
bReference category is male.
cReference category is no airways disease.
dHeightresid = Height – Heightexp. Heightexp obtained by linear regression: Heightexp  = 6.152 *Age +83.362 (adjusted R2 = .804).
The dataset can be found in the Supporting Information (Data S1).

PIF：吸气峰流速（peak inspiratory flow rate）；FIR20–80%：流速增幅率（flow increase rate）；Vi：吸入容积（inhaled volume）；ti：吸气时间（inhalation time）。
a 参照组为R5。
b 参照组为男性。
c 参照组为无气道疾病。
d 身高残差（Heightresid）= 身高（Height） − 预测身高（Heightexp）。预测身高Heightexp通过线性回归求得：Heightexp = 6.152 × 年龄 + 83.362（校正决定系数adjusted R² = 0.804）。
该数据集可在支持信息（Data S1）中获取。