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Table 3 Results of the meta-analysis

From: Robotic versus laparoscopic Gastrectomy for gastric cancer: a systematic review and updated meta-analysis

Outcomes

No. of studies

Sample size

Heterogeneity (P, I 2)

Overall effect size

95% CI of overall effect

P

LG

RG

Conversion

4

16

6

0.68, 0%

RR =0.88

0.36 ~ 2.17

0.78

Operation time (min)

19

4123

1830

<0.001, 88%

WMD = −49.05

-58.18 ~ −39.91

<0.01

Blood loss (mL)

18

4055

1762

<0.001, 93%

WMD =24.38

12.32 ~ 36.43

<0.01

Time to first flatus (days)

9

1231

713

<0.001, 74%

WMD =0.09

-0.10 ~ 0.27

0.36

Time to oral intake (days)

9

2055

1096

0.67, 0%

WMD =0.23

0.13 ~ 0.34

<0.01

Hospital stay (days)

19

4123

1830

<0.001, 82%

WMD =0.35

-0.25 ~ 0.95

0.25

Overall complications

19

4123

1830

0.82, 0%

RR =0.96

0.82 ~ 1.13

0.65

Surgical complications

17

3234

1552

0.52, 0%

RR =0.87

0.72 ~ 1.05

0.15

Medical complications

12

2137

907

0.82, 0%

RR =1.34

0.75 ~ 2.40

0.32

Reoperation

7

1796

789

0.35, 11%

RR =0.69

0.29 ~ 1.62

0.39

Mortality

7

2131

838

0.91, 0%

RR =0.67

0.26 ~ 1.74

0.41

Retrieved lymph nodes

17

3229

1585

<0.001, 86%

WMD = −1.44

-3.26 ~ 0.37

0.12

Proximal margin (cm)

9

2006

1024

0.21, 26%

WMD = −0.14

-0.36 ~ 0.07

0.18

Distal margin (cm)

8

1948

973

<0.001, 81%

WMD =0.09

-0.46 ~ 0.65

0.74

Recurrence

3

500

187

0.39, 0%

RR =1.09

0.57 ~ 2.05

0.80

Cost (USD)

4

390

384

<0.001, 93%

WMD = −3944.8

-4943.5 ~ −2946.2

<0.01