Figure 3. Effects of treatment on FEV₁ for continued treatment studies. Diamonds represent the extent of the confidence intervals. For group 1, test for heterogeneity, P > 0.2; test for overall effect, P = 0.17. For group 2, test for overall effect, P > 0.2. For both groups, test for heterogeneity, P = 0.18; test for overall effect, P > 0.2.

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