No statistically significant difference in asthma control, pulmonary function, exacerbation rate and drug reactions were found in each down-stepped period between the two groups.
两组各降阶梯哮喘控制率、肺功能、哮喘加重率和药物不良反应发生率比较，差异无统计学意义。
No statistically significant difference in asthma control, pulmonary function, exacerbation rate and drug reactions were found in each down-stepped period between the two groups.
两组各降阶梯哮喘控制率、肺功能、哮喘加重率和药物不良反应发生率比较，差异无统计学意义。
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