Table 4.

Frequency and odds of major and minor complications.

Parameters	<80 years	≥80 years	Odds ratio (95% CI)	P-value
Major
Stroke	0.10%	0.30%	3.95 (1.18 to 13.25)	0.026
Cardiac arrest	0.00%	0.00%	n/a	n/a
MI	0.10%	0.60%	4.91 (1.93 to 12.52)	0.001
Pulmonary embolism	0.30%	0.80%	3.91 (1.87 to 8.19)	<0.0001
Re-intubation	0.10%	0.60%	9.34 (3.56 to 24.79)	<0.0001
On ventilator >48 hours	0.04%	0.40%	11.27 (2.83 to 44.82)	0.001
Acute renal failure	0.02%	0.20%	15.86 (2.29 to 109.88)	0.005
Sepsis	0.20%	0.30%	1.75 (0.61 to 5.02)	0.294
Septic Shock	0.02%	0.30%	12.36 (2.29 to 66.75)	0.003
Minor
Superficial SSI	0.20%	0.00%	n/a	n/a
Deep SSI	0.10%	0.10%	0.54 (0.07 to 4.27)	0.557
Organ space infection	0.10%	0.10%	0.47 (0.06 to 3.73)	0.478
Wound dehiscence	0.10%	0.10%	0.64 (0.08 to 5.23)	0.678
Pneumonia	0.40%	0.90%	2.03 (1.08 to 3.83)	0.028
Urinary tract infection	0.60%	1.70%	2.72 (1.67 to 4.45)	<0.0001
Deep vein thrombosis	0.30%	0.30%	1.08 (0.41 to 2.87)	0.880
Renal insufficiency	0.10%	0.30%	6.03 (1.59 to 22.85)	0.008
Transfusion	3.30%	7.20%	1.97 (1.56 to 2.49)	<0.0001

MI = myocardial infarction; SSI = surgical site infection.