. 2022 Oct 31;57(2):83–90. doi: 10.1136/bjsports-2022-105890

Table 4.

Weekly prevalence of injuries per intervention group and pair-wise prevalence rate ratios between groups

	Extended Knee Control (1)	Adductor programme (2)	Comparison group (3)	(1) vs (2)	(1) vs (3)	(2) vs (3)
	PR (95% CI)	PR (95% CI)	PR (95% CI)	PRR (95% CI) p value	PRR (95% CI) p value	PRR (95% CI) p value
Primary outcomes
Three lower-limb locations combined*	10.87 (9.64 to 12.25)	13.45 (11.67 to 15.50)	14.76 (13.15 to 16.57)	0.83 (0.69 to 1.00) p=0.048	0.74 (0.63 to 0.87) p<0.001)	0.87 (0.72 to 1.05) p=0.143
Groin	3.19 (2.55 to 3.98)	4.08 (3.16 to 5.28)	2.26 (1.68 to 3.03)	0.59 (0.42 to 0.83) p=0.003	1.39 (0.96 to 2.01) p=0.082	2.07 (1.39 to 3.09) p<0.001
Secondary outcomes
Hamstring	1.47 (1.06 to 2.04)	2.25 (1.59 to 3.19)	3.74 (2.97 to 4.71)	0.63 (0.39 to 1.02) p=0.059	0.39 (0.26 to 0.58) p<0.001	0.62 (0.41 to 0.94) p=0.025
Knee	5.96 (5.07 to 7.01)	7.11 (5.85 to 8.64)	6.46 (5.42 to 7.69)	0.90 (0.69 to 1.16) p=0.395	0.93 (0.74 to 1.19) p=0.571	1.03 (0.79 to 1.34) p=0.850
Ankle	3.47 (2.81 to 4.29)	4.58 (3.59 to 5.84)	5.13 (4.21 to 6.24)	0.75 (0.54 to 1.04) p=0.082	0.68 (0.51 to 0.91) p=0.009	0.85 (0.62 to 1.17) p=0.314
All physical complaints	22.26 (20.47 to 24.21)	27.82 (25.20 to 30.70)	28.09 (25.83 to 30.54)	0.81 (0.71 to 0.93) p=0.002	0.80 (0.71 to 0.90) p<0.001	1.00 (0.85 to 1.10) p=0.627
Sudden-onset	9.56 (8.41 to 10.87)	11.06 (9.46 to 12.93)	10.66 (9.31 to 12.21)	0.90 (0.73 to 1.10) p=0.290	0.90 (0.75 to 1.08) p=0.256	1.06 (0.86 to 1.31) p=0.599
Gradual-onset	11.93 (10.64 to 13.38)	15.49 (13.58 to 17.68)	15.63 (13.97 to 17.49)	0.77 (0.64 to 0.92) p=0.004	0.77 (0.65 to 0.90) p=0.001	0.94 (0.79 to 1.12) p=0.497
Substantial	12.21 (10.91 to 13.68)	16.41 (14.43 to 18.66)	16.45 (14.75 to 18.36)	0.73 (0.61 to 0.87) p<0.001	0.74 (0.64 to 0.87) p<0.001	0.99 (0.83 to 1.17) p=0.898

Prevalence rates are unadjusted, whereas prevalence rate ratios are adjusted for sex. Total eligible weeks in extended Knee Control 2448, adductor 1420, comparison group 1951 weeks.

*Injuries to any of the following locations: hamstring, knee or ankle.

PR, prevalence rate; PRR, prevalence rate ratio.