Table 1 Characteristics of included studies

Rafal Dworakowski [1]

67

84

151

19.4 ± 1.1

23.4 ± 1.5

-

-

4

11

5

4

11

2

3

5

Peter Wenaweser [2]

27

43

70

22.8 ± 13.0

26.1 ±14.3

6.3 ± 4.0

6.3 ± 5.5

3

4

0

1

-

-

3

7

Cosmo Godino [3]

107

15

222

26.6 ± 16

32.2 ± 23

7 ± 4.9

8.3 ± 4.2

1

2

-

-

-

-

-

-

He’ le ‘ ne Eltchaninoff [4]

161

71

232

-

-

-

-

18

12

7

2

-

22

4

Johan M. Bosmans [5]

99

88

187

29 ± 15

33 ± 17

-

-

5

2

2

7

-

--

4

5

Matthias Thielmann [6]

15

24

39

12.7 ± 0.9

16.7 ± 4.4

15.1 ± 4.1

9.9 ± 7.5

2

5

-

-

-

Nawwar Al-Attar [7]

35

15

50

-

-

-

-

3

4

-

-

-

-

Mark D. Osten [8]

16

30

46

-

-

-

1

2

1

2

-

-

1

3

Ronen Gurvitch [9]

169

101

270

-

-

-

-

13

13

7

2

14

4

10

6

ZHAO Quan-ming [10]

28

20

48

20.6 ± 15.8

17.3 ± 16.1

-

-

1

4

-

-

-

-

Miriam Puls [11]

83

97

180

-

-

-

-

4

2

-

-

-

37

18

KONSTANTINOS SPARGIAS [12]

59

32

91

26 ± 12

27 ± 15

-

1

2

5

4

-

-

-

-

GERHARD SCHYMIK [13]

174

126

300

21.9 15.9

27.0 18.0

-

-

13

5

-

-

-

-

-

-

Martine Gilard [14]

2361

567

2928

21.2 ± 14.7

24.8 ± 17

14.5 ± 11.9

15.1 ±38.8

190

77

-

-

-

-

-

-

Himbert [15]

51

24

75

25 ±13

28 ± 13

15 ± 7

18 ± 9

4

4

3

10

6

2

3

1

Rodés-Cabau [16]

168

177

345

-

-

9.0 ±5.8

10.5 ± 6.9

16

20

5

3

-

-

6

11

Malin Johansson [17]

10

30

40

25.6 ±15

23.5 ± 17

-

-

2

2

2

1

-

-

0

0

Martyn Thomasp [18]

463

575

1038

25.7 ± 14.5

29.1 ± 16.3

-

-

29

59

11

16

106

27

31

42

ThierryLefe’ vre [19]

61

69

130

25.7 ± 11.5

33.8 ±14.4

11.3 ± 6.1

11.8 ± 6.8

5

3

2

1

17

3

1

2

John G. Webb [20]

113

55

168

-

-

-

-

9

10

6

1

9

2

5

4