Fig. 4From: Clinical and pulmonary function changes in cough variant asthma with small airway diseaseMedication usage for CVA cohort in real-life world. The application timing of medication usage in lower FEF50% group (a) and normal FEF50% group (b). c The rate of bronchodilators usage in the two groups. d The rate of ICS usage in the two groups. p < 0.05: statistically significantBack to article page