In-hospital treatment and outcomes of heart failure in specialist and non-specialist services: a retrospective cohort study in the elderly.

Open Heart · 2015 · PMC4442175 · PMID 26019879

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did not reach statistical significanceno p-value reported

3 This finding may partly be explained by the fact that chronic obstructive pulmonary disease was more common in the COE group, although this did not reach statistical significance.

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