Table 6. Frequency of complications pre- versus post-regionalization.

Complication	Frequency, n (%)		P value†
	Pre-regionalization	Post-regionalization
Reoperation	37 (13.6)	25 (13.2)	0.91
Anastomotic leak	36 (13.2)	18 (9.5)	0.22
Re-intubation	29 (10.7)	10 (5.3)	0.04
Ventilator >48 h	33 (12.1)	7 (3.7)	0.002
Pneumonia	81 (29.8)	26 (13.8)	<0.0001
Atrial fibrillation	66 (24.3)	27 (14.3)	0.009
Renal failure	21 (7.7)	5 (2.7)	0.02
RLN injury	6 (2.2)	2 (1.1)	0.48‡
Total	138 (50.7)	57 (30.2)	<0.0001

^†, Chi-square test; ^‡, Fisher’s exact test. OR, operating room; RLN, recurrent laryngeal nerve.