Table 3. Logistic regression analysis for major complications.

Patient characteristics	Odds ratio (confidence interval)	p-value
Age	0.99 (0.97–1.01)	0.4
Weight	1.03 (0.95–1.12)	0.4
Operative time	1.01 (1.00–1.03)	0.1
Sex	1.29 (0.27–6.14)	0.7
Type of tube	1.54 (0.32–7.47)	0.5
Congenital cardiac disease	0.93 (0.19–4.54)	0.9
Preoperative antibiotics	12.71 (2.34–68.95)	0.003
Open surgical approach	6.68 (1.1–40.67)	0.039