Table 1.

Self-reported concussion associated with playing position and professional status

Position and Status	Yes		No		Total		OR	P value
	n	(%)	n	(%)	n	(%)
Goalkeeper
Pro	0	(0)	7	(100)	7	(100)
Semi-pro	0	(0)	9	(100)	9	(100)	1.3 (0.2–73.2)	0.9
Defender
Pro	2	(11)	16	(89)	18	(100)
Semi-pro	10	(39)	16	(61)	26	(100)	5.0 (1.0–36.9)	0.045
Defender/midfielder
Pro	0	(0)	2	(100)	2	(100)
Semi-pro	0	(0)	2	(100)	2	(100)	1.0 (0.01–80.0)	0.99
Midfielder
Pro	2	(12)	15	(88)	17	(100)
Semi-pro	2	(4)	22	(96)	24	(100)	2.8 (0.2–90.1)	0.38
Attacker
Pro	2	(50)	2	(50)	4	(100)
Semi-pro	3	(18)	14	(82)	17	(100)	4.2 (0.5–47.6)	0.17