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However, the outcomes for many adolescent are far less encouraging and, if left unchecked, may halt or even reverse progress in the future

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Specifically, the pooled ORs for current, former, and ever e-cigarette users were 1.473 (95% CI: 1.2601.723), 1.766 (95% CI: 1.4182.200), and 1.388 (95% CI: 1.0702.458), respectively, indicating that individuals who use or have used e-cigarettes face significantly greater odds of having COPD

Galaxy Gas is an Atlanta-based brand of nitrous oxide, an odorless, colorless, non-flammable gas also known as laughing gas or whippits, typically associated with recreational drug use

Missing data on demographic covariates were imputed as described in the PATH Study Restricted-Use Files User Guide