Table 1: General characteristics of included studies.

Author name

Publication year

Nationality

Age

Patients Number(total)

Control/VCI

Lei Yu, et al. [22]

2014

China

40.2 + 7.2/40.2 + 11.2

33

22/11

Chuanming Li, et

2014

China

68.0 (5.8)/69.0 (7.8)

65

35/30

al. [23]

 

 

 

 

 

Jingjing Su, et al. [24]

2019

China

48.5 ± 13.7/49.

0 ± 14.2

66

44/22

Liye Yi, et al. [25]

2012

China

65.3 + 8.1/66.7 + 9.5

54

26/28

Xia Zhou, et al. [26]

2016

China

68.87 + 7.05/0.0

8.26

9+55

23/32

Weina Ding, et

2015

China

67.78 ± 6.7 5/71.

51

22/29

al. [27]

 

 

07 ± 6.72

 

 

Ya-wen Sun, et

2011

China

66.2 ± 7.7/69.1

34

18/16

al. [28]

 

 

± 7.8

 

 

Xiaoshuang Liu, et

2019

China

67.63 ±

56

27/29

al. [29]

 

 

8.19/70.48 ± 4.8

1

 

 

Qing Ye, et al. [30]

2019

China

62.03 ± 7.53/66.

00 ± 5.13

47

33/14

Meimei Zuo, et al. [31]

2019

China

62.72 ± 8.22/63.84 ± 14.1

63

32/31

Min-Chien Tu, et al. [32]

2020

Taiwan

65.1 (6.97)/75.8 (7.67)

43

23/20

Ling Ni, et al. [33]

2016

China

70 ± 9 + 79 ± 6

50

28/22

Zhanxiong Wu, et

al. [34]

2022

China

69.11 ± 7.87

/72.00 ± 5.89

36

18/18

Kai du, et al. [35]

2021

China

66.93 ± 6.83

/68.56 ± 8.91

514

257/257

Shuai Han, et al. [36]

2022

China

31.0 ± 6.0

/30.2 ± 4.5

91

47/44

Bo Liu, et al. [37]

2022

China

62.9 ± 7.7

/63.6 ± 9.4

116

76/40

Rong Zhao, et al. [38]

2022

China

74.41 ± 8.227/7

5.89 ± 8.554

153

100/53

Huiping Chen, et

al. [39]

2021

China

55.04 ± 3.51

/67.26 ± 6.77

116

47/69

Qing Ye, et al. [40]

2022

China

60.78 ± 7.36

/65.52 ± 7.97

172

95/77

Amr.A.M.T, et al. [41]

2020

Egypt

62.02 ± 3.70

/64.61 ± 3 .85

68

24/44

Yuanyuan Liu, et al. [42]

2022

China

60.58 ±

5.98/65.04 ±

6.90

64

36/28

Yujun Gao, et al. [43]

2022

China

68.80 ± 4.951

/69.07 ± 4.932

121

68/53

Xuanyu Li, et al. [44]

2018

China

67.61 ± 8.86

/70.33 ± 8.27

58

31/27

Stefano Orsolini, et

al. [45]

2020

Italy

47.0 ± 11.1

/43.6 ± 11.7

39

16/23

Ming Qi, et al. [46]

2018

China

69.1 ± 8.1

/70.6 ± 6.2

32

16/16

Jinfang Wang, et

al. [47]

2019

China

58.35 ± 6.82/59.

28 ± 6.12

56

28/28