Table 2 Summary meta-analysis of comparison between gastrectomy group and non-gastrectomy group

Age

7

380/7813

11.11 [7.80, 14.41]; P < 0.01

I² = 90%; P < 0.01

Sex (male)

6

350/7783

3.74 [2.92, 4.79]; P < 0.01

I² = 29%; P = 0.22

    Gallbladder status

    Acute or chronic cholecystitis

4

95/1136

1.20 [0.83, 1.75]; P = 0.33

I² = 9%; P = 0.35

    Symptomatic cholelithiasis

2

42/1964

0.76 [0.21, 2.78]; P = 0.68

I² = 83%; P = 0.01

    Combined with CBD stone

2

58/207

3.67 [2.58, 5.20]; P < 0.01

I² = 42%; P = 0.19

    Intraoperative biliary injury

3

4/13

2.01 [0.63, 6.41]; p = 0.24

I² = 38%; P = 0.20

Postoperative complication

    Bile leakage

2

5/9

19.00 [5.44, 66.41]; P < 0.01

I² = 0%; P = 0.78

    Wound infection

3

5/10

11.23 [3.75, 33.67]; P < 0.01

I² = 0%; P = 0.99

    Bleeding

3

1/10

4.28 [0.73, 25.32]; p = 0.11

I² = 0%; P = 0.80