From: The effect of tracheostomy and vasoconstrictor therapy on outcome in neurosurgical patients requiring intensive care
Logistic regression on mortality (odds ratio):
Tracheostomy
Exp (B) = 0.76
95% CI (0.40-1.46)
Vasoconstrictor
Exp (B) = 5.46
95% CI (2.87-10.41)