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Thorax 59:1020-1025 doi:10.1136/thx.2004.024307
  • Chronic obstructive pulmonary disease

Readmission rates and life threatening events in COPD survivors treated with non-invasive ventilation for acute hypercapnic respiratory failure

Table 3

 Independent risk factors for adverse outcomes following discharge

Independent risk factors for outcomes Adjusted hazard ratio(95% CI) p value
*Recurrent life threatening event defined as recurrent acute hypercapnic respiratory failure requiring assisted ventilation or death.
Readmission
    Katz score 0–4 1.75 (1.10 to 2.76) 0.018
    >21 days in hospital in previous year 1.74 (1.11 to 2.74) 0.016
Recurrent life threatening event*
    On long term oxygen before index admission 2.07 (1.30 to 3.30) 0.002
    APACHE II score (per 5 point increase) 1.34 (1.09 to 1.66) 0.006
    Body mass index (per 1 kg/m2 increase) 0.93 (0.87 to 0.99) 0.041
Death
    MRC dyspnoea score 4–5 3.07 (1.75 to 5.41) <0.001

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