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。