Hospitalisation and mortality in patients with comorbid COPD and heart failure: a systematic review and meta-analysis.

found statistically higher 30-day rehospitalisation in their derivation cohort for both crude and adjusted estimates; however, the crude estimate for their validation cohort failed to reach statistical significance [ 39 ].

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Three estimates of 30-day COPD-related rehospitalisation did not reach statistical significance [ 36 , 39 , 41 ], while three more estimates showed statistically higher 30-day COPD-related rehospitalisation in COPD patients with HF compared with those without HF [ 39 , 42 ].

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