Skip to main content

Table 2 Subgroup analysis of operation time

From: Short-and long-term outcomes of laparoscopic versus open gastrectomy in patients with gastric cancer: a systematic review and meta-analysis of randomized controlled trials

Variables

Number of studies

Heterogeneity

Model

MD

95% CI

P

Psub

I2

Lower

Upper

Countries

       

0.30

 China

7

93%

RE

52.76

36.52

69.01

<0.00001

 

 Japan

3

79%

RE

70.66

48.09

93.24

<0.00001

 

 ROK

4

97%

RE

78.29

52.02

104.57

<0.00001

 

Type of gastrectomy

       

0.03

 Distal gastrectomy

8

96%

RE

75.41

56.40

94.43

<0.00001

 

 Total gastrectomy

1

-

RE

40.00

22.57

57.43

<0.00001

 

 Undifferentiateda

7

90%

RE

52.63

38.00

67.26

<0.00001

 

Stages

       

0.23

 EGC or stage I

8

95%

RE

68.19

50.65

85.73

<0.00001

 

 AGC

4

94%

RE

47.06

27.43

66.68

<0.00001

 

 Mixtureb

4

90%

RE

68.81

42.08

95.54

<0.00001

 
  1. ROK Republic of Korea, EGC early gastric cancer, AGC advanced gastric cancer, PsubP-value of subgroup
  2. aUndifferentiated: there was undifferentiated of type of gastrectomy in original articles
  3. bMixture: EGC or stage I gastric cancer plus AGC