. 2015 Mar 1;32(5):314–326. doi: 10.1089/neu.2014.3582

Table 6.

Concussion and Concussion-Symptom Reporting Intention by Primary Football Position

	Mean^a (SD)
	Overall	OL	DL	RB	LB	DB	ST	TE	WR	QB	p value^d	F^d
Intention to report concussion symptoms^a	5.00 (1.87)	4.52 (1.90)	4.85 (1.95)	5.10 (1.89)	5.00 (1.89)	5.20 (1.86)	5.27 (1.95)	5.05 (1.66)	5.09 (1.82)	5.63 (1.58)	0.046^e	1.98
Experienced symptoms posthit, continued to play^b	1.99 (1.23)	2.35 (1.41)	2.15 (1.15)	2.00 (1.39)	2.28 (1.32)	1.66 (0.98)	1.21 (0.77)	2.02 (1.24)	1.71 (1.00)	1.73 (1.01)	<0.001^f	6.10
Experienced symptoms posthit, but did not tell coach or AT^b	1.93 (1.16)	2.23 (1.32)	2.14 (1.30)	1.76 (1.11)	2.18 (1.19)	1.73 (1.04)	1.21 (0.77)	2.02 (1.13)	1.69 (0.89)	1.60 (0.87)	<0.001^g	5.29
Experienced symptoms day after hit but did not report^b	1.70 (1.07)	1.97 (1.32)	1.88 (1.10)	1.56 (0.90)	1.85 (1.15)	1.50 (0.86)	1.21 (0.77)	1.83 (1.14)	1.59 (0.98)	1.33 (0.62)	<0.001^h	4.01

											p valueⁱ	Kruskal-Wallis Hⁱ
RTP with symptoms during football career^c	6.65 (36.66)	6.97 (11.83)	5.68 (8.88)	21.06 (113.37)	6.95 (13.01)	2.72 (4.86)	1.43 (3.33)	5.35 (9.06)	3.93 (8.25)	5.19 (7.47)	<0.001	32.31
RTP with symptoms during 2012 football season^c	1.74 (3.95)	2.95 (4.86)	1.77 (3.00)	2.22 (7.65)	2.09 (3.85)	1.08 (2.47)	0.25 (1.32)	1.37 (2.35)	1.11 (2.08)	0.94 (1.64)	<0.001	34.46
RTP with symptoms in 2 weeks preceding survey^c	0.51 (1.40)	0.79 (1.70)	0.56 (1.32)	0.86 (2.57)	0.62 (1.53)	0.26 (0.72)	0.00 (0.00)	0.45 (0.77)	0.29 (0.62)	0.28 (0.89)	0.006	21.61

^{^a}

Responses to intention outcomes were measured on a 7-point Likert scale, 1=strongly disagree and 7=strongly agree; higher mean scores indicate higher average agreement.

^{^b}

Frequencies were measured on a 6-point scale, 1=never to 6=more than once per day during the 2012 football season; higher mean scores indicate increased symptom frequency.

^{^c}

Return to play with symptoms following an impact measures were free response.

^{^d}

Reflects differences in intention outcome between position groups, as measured by a one-way analysis of variance.

^{^e}

Intention to report concussion symptoms significant positional differences from Tukey's post-hoc tests: OL>QB.

^{^f}

Experienced symptoms posthit, continued to play significant positional differences from Tukey's post-hoc tests: (OL, LB)>(WR, DB, ST), DL>ST.

^{^g}

Experienced symptoms posthit, but did not tell coach or AT significant positional differences from Tukey's post-hoc tests: OL>(DB, WR, ST); (LB, DL)>ST.

^{^h}

Experienced symptoms day after hit, but did not report significant positional differences from Tukey's post-hoc tests: OL>(DB, QB, ST).

^ⁱ

Reflects differences in free-response RTP outcomes as measured by Kruskal-Wallis' test.

OL, offensive linemen; DL, defensive linemen; RB, running backs; DB, defensive backs; ST, special teams; TE, tight end; WR, wide receiver; QB, quarterback; SD, standard deviation; AT, athletic trainer; RTP, return to play.