Lung function improvement following smoking cessation in chronic respiratory conditions: A meta-analytic approach.

In terms of FEV1 outcomes, the overall effect observed in this meta-analysis was marginal and did not reach statistical significance. 43 Notably, the study by Jang et al. 8 yielded statistically significant improvements in lung function, distinguishing it from other included studies.

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Similarly, the interventions appeared to have a greater impact in younger populations, although this trend also failed to reach significance.

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