Table 1.
Basic characteristics of included articles.
Fig 1.
Flow diagram of study selection.
Fig 2.
Summary of the risk of bias.
Table 2.
Summary of adverse reactions.
Fig 3.
Results of Meta-analysis: (A)FEV1% pred; (B) FEV1; (C) FVC; (D) FEV1/FVC%; (E) PEFR; (F)hospital admissions; (G)exacerbation rate; (H) total symptom score; (I) adverse reactions (J)gastrointestinal adverse reactions; (K)cardiovascular adverse reactions; (L)neurological adverse reactions.
Fig 4.
(A) Sensitivity analysis of total symptom scores; (B) Meta-analysis of total symptom scores after deleting the study of Subramanian2015.
Fig 5.
Funnel plot of exacerbation rate.