TABLE 4 ] .

Effect of Early Tracheostomy Compared With Late Tracheostomy on Outcomes in Logistic Models

Logistic Models	Hazards Ratio	95% CI
VAP	0.92	0.83-1.09
In-hospital mortality	0.88	0.84-0.92

Covariates in each model included age groups (18-24, 25-44, 45-64, 65-83, and > 83 y), sex, race (white, black, Hispanic, Asian, and other), payer status (private, Medicare, Medicaid, uninsured/self-pay, and other), grouped admitting diagnoses (trauma, cardiovascular, pulmonary, surgical, neurologic, sepsis, and other), severity of illness score (minor, moderate, major, and extreme), and admission status (elective and emergent). See Table 2 legend for expansion of abbreviation.