Length of stay, duration of mechanical ventilation, mortality, and acute kidney injury in acute respiratory failure requiring endotracheal intubation

Table 4 Correlation of continuous variables with length of stay and duration of mechanical ventilation amongst survivors, n = 41

Characteristic	Length of stay for survivors (r)	P value	Duration of mechanical ventilation for survivors (r)	P value
Age	-0.4	0.02	-0.4	0.01
APACHE score	0.07	0.7	0.03	0.8
CVC days	0.99	< 0.001	0.96	< 0.001
PaO2/FiO2	0.3	0.3	-0.3	0.1
PaO2	-0.1	0.5	-0.2	0.3
PaCO2	0.17	0.3	0.1	0.4
pH	-0.02	0.9	0.1	0.5
Lactate	-0.15	0.4	-0.01	0.5
Ppeak	0.3	0.05	0.32	0.04
PEEP	0.2	0.2	0.2	0.2
RR	0.4	0.02	0.36	0.02
MV	0.3	0.1	0.3	0.1

APACHE: Acute physiology and chronic health evaluation; CVC: Central venous catheter; PaO₂: Arterial oxygen partial pressure; FiO₂: Fraction of inspired oxygen; PaCO₂: Arterial carbon dioxide partial pressure; Ppeak: Peak airway pressure; PEEP: Positive end-expiratory pressure; RR: Respiratory rate; MV: Minute ventilation.