TABLE 4.

Binary logistic regression model showing predictors of extubation failure

Factor		Odds ratio	95% confidence interval	P-value
Age		1.023	0.97–1.07	0.34
DTF < 26%		6.20	1.06–36.04	0.04*
VTI change < 10.2		6.16	1.14–33.13	0.03*
LUS change
	≥ 1	1.62	0.20–13.12	0.64
	≥ 2	0.53	0.07–3.76	0.53
	≥ 3	0.67	0.044–10.07	0.77
CVP > 11 cm H20		0.46	0.10–25.01	0.30
Respiratory Rate > 20		0.65	0.15–2.84	0.57

LUS – lung ultrasound score, DTF – diaphragmatic thickness fraction, SBT – spontaneous breathing trial, VTI – velocity time integral, Vt – tidal volume, CVP – central venous pressure