Table 2.

Multivariable Cox regression model (at one year)

	HR	95 % CI	P value
Maximal inspiratory pressure ≤30	4.41	1.51, 12.90	0.007
SAPS2	1.02	1.00, 1.04	0.078
Ventilation (days) >7	1.53	0.68, 3.41	0.30
Body mass index	0.89	0.82, 0.96	0.004

HR hazard ratio, CI confidence intervals, SAPS Simplified Acute Physiology Score