Table 4 Details of the included studies

Niloy et al. [7]

45

9

34

2

21

5

41 (91.1)

13 (28.9)

3 (6.7)

Liu et al. ^a [10]

6

0

6

0

5

1

5 (83.3)

0 (0)

1 (16.7)

Ekeh et al. [11]

88

51

22

15

88

0

84 (95.5)

8 (9.1)

0 (0)

Liu et al. [16]

15

-

-

-

0

0

12 (80.0)

1 (6.7)

0 (0)

Franco et al. ^a[25]

14

8

6

0

12

1

13 (92.9)

1 (7.1)

0 (0)

Wu et al. ^a[26]

53

5

48

0

24

29

44 (83.0)

14 (26.4)

0 (0)

Smith et al.^a [27]

41

27

9

5

22

2

30 (73.0)

12 (29.3)

12 (29.3)

Haan et al.^a [28]

140

-

-

-

83

48

122 (87.1)

38 (27.1)

3 (2.1)

Ekeh et al. ^a[30]

15

10

1

4

-

-

14 (93.3)

1 (6.7)

0 (0)

Wu et al.^a [32]

19

3

16

0

0

16

14 (74.0)

7 (36.8)

5 (26.3)

Edmund et al. [47]

8

3

0

5

-

-

8 (100.0)

1 (12.5)

1 (12.5)

Ashraf et al. [48]

109

109

0

0

109

0

102 (93.6)

7 (6.4)

0 (0)

Kaseje et al. [49]

11

8

3

0

-

-

8 (72.7)

3 (27.3)

3 (27.3)

Haan et al. [50]

32

32

0

0

32

0

29 (90.1)

3 (9.4)

3 (9.4)

Wu et al. [51]

10

3

7

0

0

10

8 (80.0)

9 (90.0)

2 (20.0)

Bessoud et al. [52]

37

37

0

0

37

0

36 (97.0)

1 (2.7)

1 (2.7)

Killeen et al.^a [53]

53

24

22

7

-

-

47 (88.7)

43 (81.1)

3 (5.7)

Sclafani et al. [54]

60

60

0

0

60

0

57 (95.0)

5 (8.3)

3 (5.0)

Sclafani et al. [55]

18

17

0

1

18

0

18 (100)

1 (5.6)

0 (0)

Gaarder et al. ^a[56]

27

21

2

4

-

-

26 (96)

1 (3.7)

0 (0)

Cooney et al.^a [57]

9

6

3

0

-

-

6 (67)

3 (33.3)

0 (0)

Hagiwara et al. [58]

15

9

1

5

-

-

15 (100)

5 (33.3)

1 (6.7)

Wei et al.[59]

51

14

37

0

-

-

50 (98)

2 (3.9)

15 (29.4)

Total

876

456

217

48

511

112

789 (90.1)

179 (20.4)

56 (6.4)