Association of FeNO Decline Rate with Symptom Improvement in COPD: A Real-World Observational Study.

Int J Chron Obstruct Pulmon Dis · 2026 · PMC13035481 · PMID 41924250

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a positive trendno p-value reported

BMI showed a positive trend but without statistical significance (adjusted OR 1.13, 95% CI 1.00–1.29, P =0.056).

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