Table 2

Summary of concussion rates (per 1000 athlete exposure) in collegiate soccer players by sex and setting

Study	Study years	Male			Female
Study	Study years	Training	Match	Overall	Training	Match	Overall
Boden et al 15	1995, 1996			0.58 (0.26 to 0.90)			0.40 (0.20 to 0.60)
Covassin et al 142*	1997–1998	0.08 (0.01 to 0.15)	1.10 (0.89 to 1.81)		0.14 (0.09 to 0.16)	2.04 (2.29 to 1.9)
	1998–1999	0.11 (0.01 to 0.15)	1.41 (0.89 to 1.81)		0.11 (0.09 to 0.16)	2.04 (2.29 to 1.9)
	1999–2000	0.04 (0.01 to 0.15)	1.56 (0.89 to 1.81)		0.13 (0.09 to 0.16)	2.21 (2.29 to 1.9)
Agel et al (M)143	1988/1989–2002/2003	0.08 (0.06 to 0.09)	1.08 (0.98 to 1.19)
Dick et al (F)144	1988/1989–2002/2003				0.12 (0.10 to 0.14)	1.42 (1.29 to 1.55)
Chandran et al 145	2004–2009	0.30 (0.25 to 0.35)	2.19 (1.92 to 2.46)	0.71 (0.64 to 0.78)	0.35 (0.29 to 0.41)	2.49 (2.23 to 2.75)	0.87 (0.79 to 0.95)
Fuller et al 146	2005–2006 (grass)	0.11	1.37		0.13	2.17
Fuller et al 147	2005–2006 (turf)	0.07	2.36		0.21	2.00
Zuckerman et al 22	2009/2010–2013/2014	0.18 (0.1 to 0.25)	0.97 (0.64 to 1.30)	0.34 (0.25 to 0.44)	0.21 (0.14 to 0.28)	1.94 (1.56 to 2.32)	0.63 (0.52 to 0.74)
Kerr et al 148	2009/2010–2013/2014	0.14 (0.06 to 0.21)	0.67 (0.36 to 0.98)	0.26 (0.17 to 0.65)	0.18 (0.11 to 0.25)	1.65 (1.27 to 2.03)	0.54 (0.43 to 0.064)
Roos et al 21	2009/2010–2014/2015	0.17 (0.11 to 0.24)	0.94 (0.65 to 1.24)		0.20 (0.14 to 0.26)	1.83 (1.5 to 2.16)

Absence of CIs indicates that either CIs were not reported or that the data necessary to determine CIs were not reported.
*CI were presented as the aggregate of the 3 years of the study.