Table 3

Overall survival (multivariate Cox regression)

FactorHR95% CI
Unsupervised NIV2.331.33 to 4.10
Supervised NIV1.160.62 to 2.16
Age (per year)1.031.02 to 1.04
Sedative use1.160.98 to 1.37
Cardiac failure1.311.01 to 1.67
Obstructive sleep apnoea0.440.23 to 0.83
Chronic pulmonary disease0.770.61 to 0.97
  • NIV, non-invasive ventilation.