Meta-Analysis: Effect of Long-Acting {beta}-Agonists on Severe Asthma Exacerbations and Asthma-Related Deaths

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Meta-Analysis: Effect of Long-Acting ß-Agonists on Severe Asthma Exacerbations and Asthma-Related Deaths

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Figure 1. Study flow diagram.

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Table. Studies Included in Primary Analysis

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Figure 2. Effect of long-acting ß-agonists compared with placebo on odds ratio of hospitalizations for asthma exacerbation.

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Figure 3. Effect of long-acting ß-agonists compared with placebo on odds ratio of life-threatening asthma exacerbations. SMART = Salmeterol Multi-center Asthma Research Trial.