Table 3.

Results of regression model using the complication in question as the dependent variable and the admission year as the predictor

	Corrected model			Univariate model
	OR	95% CI	P value	OR	95% CI	P value
Acute renal failure	0.97	0.96 to 0.97	<0.01	0.93	0.93 to 0.94	<0.01
ARDS	0.89	0.88 to 0.89	<0.01	0.85	0.84 to 0.85	<0.01
Cardiac arrest with CPR	0.89	0.88 to 0.89	<0.01	0.99	0.99 to 0.99	<0.01
Deep SSI	1.08	1.07 to 1.10	<0.01	1.09	1.08 to 1.10	<0.01
DVT/thrombophlebitis	1.09	1.08 to 1.09	<0.01	0.96	0.96 to 0.96	<0.01
Myocardial infarction	0.97	0.97 to 0.98	<0.01	0.95	0.94 to 0.95	<0.01
Organ/space SSI	0.97	0.97 to 0.98	<0.01	0.87	0.86 to 0.87	<0.01
Pneumonia	0.97	0.97 to 0.98	<0.01	0.86	0.86 to 0.87	<0.01
Pulmonary embolism	0.97	0.96 to 0.97	<0.01	0.96	0.95 to 0.96	<0.01
Stroke/CVA	1.01	1.01 to 1.02	<0.01	1.04	1.04 to 1.05	<0.01
Superficial SSI	0.97	0.97 to 0.97	<0.01	0.95	0.94 to 0.95	<0.01
Systemic sepsis	0.67	0.67 to 0.68	<0.01	0.71	0.70 to 0.72	<0.01

Data are presented as OR with 95% CI and p values.

The multivariate model was controlled for confounders, including age, gender, injury severity, and Glasgow Coma Scale scores.

ARDS, acute respiratory distress syndrome; CPR, cardiopulmonary resuscitation; CVA, cerebrovascular accident; DVT, deep venous thrombosis; SSI, surgical site infection.