Table 4. Effects of FIFA 11+ intervention on injury risk in players based on secondary outcomes.

	INT Group		CON Group
	n	Incidence (x1000 hrs)	n	Incidence (x1000 hrs)	z-test	Rate Ratio (95% CI)	P-value
Injury by Body Location
Upper Extremity Injuries	10	.2	18	.3	- .38	.86 (.41 – 1.84)	.706
Thigh Injuries	1	.0	14	.2	- 1.95	.19 (.04 – 1.01)	.052
Knee Injuries	12	.3	21	.3	- 1.92	.93 (.47 – 1.88)	.848
Ankle Injuries	10	.2	30	.5	- 1.75	.53 (.27 – 1.08)	.080
Lower Leg Injuries	2	.0	3	.0	-	-	-
Injury by Aetiology
Overuse Injuries	2	.0	14	.2	- 1.96	.26 (.07 – 0.98)	.047*
Acute Injuries	34	.9	80	1.3	- 2.09	.65 (.44 – 0.97)	.037*
Injury by Mechanism
Contact Injuries	27	.6	66	1.1	- .98	.65 (.27 – 1.54)	.328
Non-contact Injuries	7	.2	16	.3	- 1.91	.65 (.42 – 1.01)	.056
Injury by Severity
Minimal Injuries	7	.2	23	.4	- 1.50	.52 (.23 – 1.21)	.133
Mild Injuries	7	.2	27	.4	- 2.08	.42 (.19 – 0.95)	.037 *
Moderate Injuries	14	.3	33	.5	- 1.40	.64 (.35 – 1.19)	.162
Severe Injuries	7	.2	9	.2	.170	1.09 (.42 – 2.83)	.865

* Significant at p < 0.05. CI – Confidence Interval, INT – Intervention, CON – Control