Table 1

Player characteristics by concussion and physical activity (PA) status

Frequency (%)Concussed (n=93)Not concussed (n=1115)Total (n=1208)
PA volume recommendations
Met
(n=59)
Not met
(n=34)
Met
(n=839)
Not met
(n=276)
Enrolment year
 2011–201236 (61.02)11 (32.35)277 (33.02)44 (15.94)368 (30.47)
 2013–201413 (22.03)11 (32.35)396 (47.20)130 (47.10)550 (45.53)
 2014–201510 (16.95)12 (35.30)166 (19.78)102 (36.96)290 (24.00)
Age group
 Pee Wee (ages 11–12)12 (20.34)11 (32.35)376 (44.82)127 (46.02)526 (43.54)
 Bantam (ages 13–14)22 (37.29)16 (47.06)281 (33.49)117 (42.39)436 (36.09)
 Midget (ages 15–17)25 (42.37)7 (20.59)182 (21.69)32 (11.59)246 (20.37)
City
 Calgary51 (86.44)22 (64.71)684 (81.53)184 (66.67)941 (77.90)
 Edmonton8 (13.56)12 (35.29)155 (18.47)92 (33.33)267 (23.10)
Competition level
 Elite (upper 30%)42 (71.19)14 (41.18)443 (52.80)83 (30.01)582 (48.18)
 Non-elite (lower 70%)17 (28.81)20 (58.82)396 (47.20)193 (69.93)626 (51.82)
Previous concussion history
 Yes25 (42.37)15 (44.12)277 (33.02)70 (25.36)387 (32.04)
 No32 (54.24)17 (50.00)559 (66.62)177 (64.13)785 (64.98)
 Missing2 (3.39)2 (5.88)3 (0.36)29 (10.51)36 (2.98)
Median days since most recent concussion at study entry
(IQR)
633.5 (270–1508.5)748 (243–1738)589 (311–1061)715 (359–1179)635 (313–1195)