Table 4.

Comparison of complications between the 2 groups

	Traditional	Enhanced	p-value
	(n = 3,000)	(n = 1,500)	Chi-squared test
RTT (30-day)	74 (2.5%)	27 (1.8%)	0.2
Stroke (30-day)	14 (0.5%)	3 (0.2%)	0.2
GI bleeding (30-day)	18 (0.6%)	4 (0.3%)	0.1
MI (30-day)	25 (0.8%)	7 (0.5%)	0.2
ARF (30-day) a	1 (0.03%)	2 (0.13%)	0.2
DVT (60-day)	23 (0.8%)	9 (0.6%)	0.5
PE (60-day)	36 (1.2%)	17 (1.1%)	0.9
Re-admission	140 (4.7%)	72 (4.8%)	0.8

RTT: return to theater, GI: gastrointestinal, MI: myocardial infarction, ARF: acute renal failure, DVT: deep venous thrombosis, PE: pulmonary embolism

^a Requiring admission to high dependency unit.