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Table 2 Basic information on the number of ACL injuries in the intervention and control groups from the included studies

From: Injury risk reduction programs including balance training reduce the incidence of anterior cruciate ligament injuries in soccer players: a systematic review and meta-analysis

Study

 

IG

    

CG

   

Year

N

ACL injuries

Exposure hours

ACL injuries/1,000 h

Year

N

ACL injuries

Exposure hours

ACL

injuries/1,000 h

Beaudouin,2019[38]

11.7 ± 0.8

2066

0

140,659

0.000

11.3 ± 1.2

1829

0

152,089

0.000

Gilchrist,2008[32]

19.88

583

7

70,440

0.099

19.88

852

18

1,058,838

0.170

Grooms,2013[33]

20.0 ± 2.4

30

0

2703

0.000

20.3 ± 1.6

34

0

2418

0.000

Mandelbaum,2005[34]

14–18

1885

6

135,720

0.044

/ 14–18

3818

67

274,896

0.244

Krutsch,2019[37]

22.7 ± 4.3

529

15

27,159

0.552

21.9 ± 4.1

601

28

30,855

0.907

Silvers-Granelli,2015[35]

20.40 ± 1.66

675

3

70,452

0.043

20.68 ± 1.46

850

16

88,424

0.181

Steffen,2008[36]

13–17

1073

4

66,423

0.060

13–17

947

5

65,725

0.076

Waldén,2012[39]

14.0 ± 1.2

2479

7

149,214

0.047

14.1 ± 1.2

2085

14

129,084

0.108

  1. Note: IG stands for Intervention Group, and CG stands for Control Group
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Journal of Orthopaedic Surgery and Research

ISSN: 1749-799X