Table 4. The association between obesity and hospital length of stay.

Definition of sepsis & vital status at discharge	Beta-coefficientb (Difference in LOS)	95% Confidence interval	p-value
All cases of sepsis
Alive and dead	0.65	0.44 to 0.86	<0.001
Alive only	0.70	0.49 to 0.91	<0.001
Sepsis as the principal diagnosis
Alive and dead	0.54	0.37 to 0.71	<0.001
Alive only	0.55	0.37 to 0.72	<0.001
Severe sepsis
Alive and dead	0.61	0.38 to 0.84	<0.001
Alive only	0.68	0.42 to 0.94	<0.001
Septic shock
Alive and dead	0.74	0.40 to 1.08	<0.001
Alive only	0.66	0.28 to 1.05	<0.001

^bAdjusted for age, sex, median household income, weekend admission, seasons, insurance status, hospital control/ownership, hospital number of beds, hospital location/teaching status, type of procedures, 28 comorbid conditions.