Table 1 Demographic data of the study’s articles

Linder et al. (2017) [3]

20

44.7

12

8

Safdar et al. (2006) [4]

2

35

2

0

Asma et al. (2009) [2]

11

Long et al. (2004) [5]

4

35.6

1

3

Kumar et al. (2011) [6]

4

29.3

3

1

Xu et al. (2015) [7]

15

43.6

6

9

Caylan et al. (2006) [8]

1

20

0

1

Zhou et al. (2015) [9]

16

40.5

7

9

Michael and Raut (2007) [10]

21

37

11

10

Shea and Ge (2001) [11]

11

53

5

6

Rinaldo et al. (2002) [12]

1

20

1

0

Marioni et al. (2002) [13]

1

59

1

0

Salvinelli et al. (2004) [14]

7

42

1

6

Thom et al. (2013) [15]

11

53.5

7

4

Sheahan and Viani (2007) [16]

1

58

1

0

Mandour et al. (2017) [17]

4

4.25

3

1

Alzhrani et al. (2016) [18]

26

Fayad et al. (2003) [19]

5

40

1

4

Joseph et al. (2009) [20]

1

19

1

0

Binnetoglu et al. (2020) [21]

6

6.48

3

3

Meier et al. (2006) [22]

24

60

9

15

O’Regan et al. (2007) [23]

90

48

33

57

Guntinas-Lichius et al. (2006) [24]

139

52

63

76

Gaillard et al. (2005) [25]

56

52.7

29

27

Upton et al. (2007) [26]

55

56

31

24

Shlizerman and Ashkenazi (2005) [27]

1

4

1

0

Windfuhr et al. (2009) [28]

10

3

7

Rinaldi et al. (2012) [29]

66

49.6

33

33

PU et al. (2020) [30]

29

52.6

13

16

Misirlioglu et al. (2016) [31]

1

15

0

1

Tzermpos et al. (2012) [32]

1

20

0

1

Hotta et al. (2002) [33]

2

31.5

0

2

Chevalier et al. (2010) [34]

1

34

0

1

Rai et al. (2008) [35]

1

21

0

1

Alberio et al. (2018) [36]

1

69

1

0

Ramdasi et al. (2015) [37]

1

40

0

1

Pang et al. (2005) [38]

1

10

1

0

Vrabec et al. (2003) [39]

8

49

4

4

Feng et al. (2021) [40]

1

61

0

1

Lee et al. (2015) [41]

1

39

0

1

Odat et al. (2018) [42]

1

33

0

1

Sanna et al. (2006) [43]

22

43.1

12

10

Limb et al. (2001) [44]

1

26

0

1

Hayler et al. (2020) [45]

55

44.6

22

33

Total

736

321

378

Mean age = 41.9 ± 2.5 SD

43.6%

51.4%