Table 3.

Postoperative outcomes and SSI.

Variable	Patients without SSI (n = 49,147)	Patients with SSI (n = 179)	P value
Unplanned intubation (n = 183), %	0.4	1.7	0.004
Urinary tract infection (n = 164), %	0.33	1.12	0.07
Ventilator > 48 h (n = 127), %	0.3	2.2	<0.001
Pneumonia (n = 106), %	0.2	1.7	<0.001
Sepsis (n = 68), %	0.1	9.5	<0.001
Bleeding requiring transfusion (n = 49), %	0.09	3.4	<0.001
Wound disruption (n = 30), %	0.04	4.5	<0.001
DVT or thrombophlebitis (n = 28), %	0.06	0	0.75
Peripheral nerve injury (n = 27), %	0.05	0	0.8
Cardiac arrest requiring CPR (n = 27), %	0.05	0	0.8
Septic shock (n = 24), %	0.05	0	0.8
MI (n = 23), %	0.05	0	0.8
Pulmonary embolism (n = 22), %	0.04	0.6	0.001
Stroke, CVA with neurologic deficit (n = 18), %	0.04	0	0.8
Acute renal failure (n = 8), %	0.01	0.6	<0.001
Progressive renal insufficiency (n = 5), %	0.01	0.6	<0.001
Coma >24 h (n = 5), %	0.01	0	0.9
Return to OR (n = 1132), %	2.23	19	<0.001
Length of stay, mean ± SD	1.3 ± 5.1	3.2 ± 5.8	<0.001

CPR = cardiopulmonary resuscitation; CVA = cerebrovascular accident; DVT = deep venous thrombosis; SD = standard deviation.