Tobacco smoke exposure in early life and adolescence in relation to lung function.

Eur Respir J · 2018 · PMC6003782 · PMID 29748304

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a significant trendno p-value reported

In dose-response analyses, a significant trend for increasing number of cigarettes was observed (p trend <0.01), with reduced FEV 1 /FVC ratio (−1.8%, 95% CI −3.0 to −0.7) in participants exposed to ≥10 cigarettes per day during pregnancy.

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