Table 5. 90-day Mortality for High-Risk Major Hepatectomies.

Procedure	Era 1	Era 2	Era 3	Total
Left trisectionectomy	10.2% (8)	0% (0)	5.6% (2)	6% (10)
Right trisectionectomy	8.7% (31)	2.9% (7)	6.3% (6)	6% (44)
Right hepatectomy	4.7% (12)	3.6% (10)	2.6% (5)	4% (27)
Left hepatectomy	4.5% (4)	3.2% (4)	0.8% (1)	3% (9)
Fewer than 4 segments resected	2% (11)	2% (13)	1% (8)	1% (32)