Group name
Expert surgeons
Groups definition
patients operated by two experienced surgeons (ESs) with >100 procedures
Groups remarks
After matching
T0
0
T2
157 (61.3)
T3a
75 (29.3)
>T3b
24 (9.4)
N0
134 (52.6)
≥N1
22 (8.6)
GS 6
122 (47.7)
GS 7
97 (37.9)
GS 8-10
37 (14.5)