Table 4 Incidence (injuries/1000 player match hours) of match injuries on artificial turf and grass for male and female players as a function of injury location.

Injury location	Male players				Female players
	Incidence (95% CI)		Incidence ratio (95% CI)	p Value (z test)	Incidence (95% CI)		Incidence ratio (95% CI)	p Value (z test)
	Artificial turf	Grass			Artificial turf	Grass
Head/neck	4.31 (3.03 to 6.13)	2.37 (1.86 to 3.02)	1.82 (1.18 to 2.78)	<0.01	2.57 (1.62 to 4.08)	3.41 (2.86 to 4.06)	0.75 (0.46 to 1.24)	0.26
Upper limbs	1.67 (0.95 to 2.94)	1.51 (1.12 to 2.04)	1.10 (0.58 to 2.10)	0.79	1.57 (0.87 to 2.84)	1.50 (1.16 to 1.95)	1.05 (0.55 to 2.00)	0.89
Trunk	2.36 (1.47 to 3.80)	3.88 (3.22 to 4.69)	0.61 (0.36 to 1.01)	0.06	1.57 (0.87 to 2.84)	2.12 (1.70 to 2.64)	0.74 (0.39 to 1.39)	0.35
Lower limbs	17.10 (14.33 to 20.40)	16.11 (14.69 to 17.68)	1.06 (0.87 to 1.30)	0.56	13.43 (10.98 to 16.44)	14.76 (13.58 to 16.05)	0.91 (0.73 to 1.13)	0.40
Hip/groin	1.11 (0.56 to 2.22)	2.34 (1.83 to 2.98)	0.48 (0.23 to 0.99)	0.05	1.00 (0.48 to 2.10)	0.91 (0.65 to 1.28)	1.10 (0.49 to 2.47)	0.83
Thigh	4.73 (3.38 to 6.61)	3.92 (3.25 to 4.73)	1.21 (0.82 to 1.77)	0.34	2.43 (1.51 to 3.91)	2.28 (1.84 to 2.82)	1.06 (0.63 to 1.79)	0.81
Knee	3.75 (2.57 to 5.47)	3.09 (2.50 to 3.82)	1.21 (0.79 to 1.87)	0.38	4.86 (3.47 to 6.80)	4.94 (4.27 to 5.71)	0.98 (0.68 to 1.42)	0.93
Lower leg	1.67 (0.95 to 2.94)	2.16 (1.68 to 2.78)	0.77 (0.42 to 1.44)	0.42	1.43 (0.72 to 2.66)	1.83 (1.44 to 2.31)	0.78 (0.40 to 1.52)	0.47
Ankle	4.59 (3.26 to 6.45)	4.57 (3.84 to 5.44)	1.00 (0.68 to 1.47)	0.98	3.00 (1.96 to 4.60)	4.21 (3.60 to 4.93)	0.71 (0.45 to 1.12)	0.14
Foot	2.36 (1.47 to 3.80)	2.37 (1.86 to 3.02)	1.00 (0.58 to 1.70)	0.98	1.72 (0.97 to 3.02)	1.50 (1.16 to 1.95)	1.14 (0.61 to 2.13)	0.68