Table 4.

Summary of Anterior Cruciate Ligament Injury, Attendance, Completion, and Overall Compliance Rates

Study Year	ACL Injury Rate,a %	Attendance Rate,b %	Completion Rate,b %	Overall Compliance Rate,c %
Hewett et al,3 1999	Control = 1.08	Per individual = 67.8	66.6	45.2
	Intervention = 0.55
Soderman et al,25 2000	Control = 1.28	Per individual = 69.7	44.9	31.3
	Intervention = 6.45
Heidt et al,39 2000	Control = 3.10	Per individual = 100	100	100
	Intervention = 2.38
Myklebust et al,26 2003	Control = 3.08
	First intervention = 2.69	First intervention per team = 26	First-year average = 47.1	First-year average = 12.3
	Second intervention = 2.00	Second intervention per team = 29	Second-year average = 47.1	Second-year average = 13.7
Steffen et al,32 2008	Control = 0.59	Per team = 24.1	44.4	10.7
	Intervention = 0.69
Kiani et al,33 2010	Control = 0.69	Per team = 93.8	75	70.4
	Intervention = 0.00

Abbreviation: ACL, anterior cruciate ligament.

^aACL injury rate = number of ACL injury events/participants in the group (control, intervention).

^bIndicates attendance and completion rates were extracted or calculated from original literature.

^cOverall compliance rate = attendance rate × the completion rate.