Group name
Overall
Groups remarks
Subjects were divided into four categories according to preoperative BMI (kg/m2): normal (BMI < 25),overweight (BMI 25-29.9),mildly obese (BMI 30-34.9),and severely obese (BMI > 35)
T2a
344 (15.5)
T2b
879 (39.8)
T2c
497 (22.4)
T3a
372 (16.9)
>T3b
112 (5.1)
T4
6 (0.3)
GS <6
23 (1)
GS 6
764 (34.6)
GS 7
1185 (53.6)
GS 8
113 (5.1)
GS 9
122 (5.5)