Effect of tiotropium on health-related quality of life as a primary efficacy endpoint in COPD.

Int J Chron Obstruct Pulmon Dis · 2008 · PMC2629970 · PMID 18686739

Europe PMC DOI

hedged sentence

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The sentences

did not reach statistical significanceno p-value reported

The difference between the tiotropium and the placebo group was, despite the consistent effect of tiotropium, small and did not reach statistical significance in less severe patients.

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