Table 4.

Multivariable analysis model on the outcomes in the surgical ICU, in each group of patients

Adverse events and treatment outcomes	Multivariable analysis (95% CI)
	All*	P-value	Nonoperated*	P-value	Postoperation**	P-value
Categorical outcomes	Adjusted odds ratio
ICU mortality	2.38 (1.25 to 4.54)	0.008	1.54 (0.65 to 3.68)	0.329	3.87 (1.38 to 10.85)	0.010
Without RRT	2.47 (1.21 to 5.06)	0.013	1.25 (0.47 to 3.35)	0.653	6.32 (1.85 to 21.64)	0.003
28-day mortality	1.52 (0.86 to 2.67)	0.145	1.38 (0.80 to 2.39)	0.244	1.34 (0.74 to 2.42)	0.338
Reintubation within 72 hours	2.51 (1.04 to 6.00)	0.039	1.18 (0.26 to 5.27)	0.830	4.44 (1.30 to 15.16)	0.017
New acute kidney injury	1.15 (0.68 to 1.94)	0.596	1.18 (0.52 to 2.67)	0.685	1.18 (0.58 to 2.41)	0.640
Vasopressor requirement	1.49 (0.90 to 2.50)	0.120	0.98 (0.44 to 2.21)	0.969	2.04 (1.04 to 4.01)	0.037
Delirium	1.97 (1.08 to 3.57)	0.025	3.16 (1.13 to 8.78)	0.027	1.50 (0.71 to 3.20)	0.290
Renal replacement therapy	2.67 (1.13 to 6.33)	0.026	3.53 (0.93 to 13.43)	0.065	2.00 (0.59 to 6.71)	0.260
Continuous outcomes	Adjusted coefficient
Days of mechanical ventilator use	0.85 (−0.38 to 2.08)	0.177	1.21 (−1.33 to 3.75)	0.349	0.72 (−0.64 to 2.07)	0.298
Days of required vasopressor agent	0.64 (−0.03 to 1.32)	0.061	1.07 (−0.38 to 2.52)	0.146	0.38 (−0.33 to 1.08)	0.294
Days of ICU length of stay	0.85 (−0.47 to 2.17)	0.205	1.14 (−1.47 to 3.76)	0.389	0.76 (−0.75 to 2.26)	0.322

Notes:

^*Models were adjusted by admission APACHE II score, albumin level, smoking status, age, and surgical status.

^**Models were adjusted by admission APACHE II score, albumin level, smoking status, and age.

Abbreviations: APACHE II, Acute Physiologic and Chronic Health Evaluation II; CI, confidence interval; ICU, intensive care unit; RRT, renal replacement therapy.