TABLE 2

Demographic Table

Total (99)Usual Care (50)Strict Rest (49)
Demographics
 Age, y, median (IQR)13.7 (12.4–15.0)13.1 (12.1–14.5)a14.7 (13–15.5)a
 Wt, kg, median (IQR)57.9 (46.5–68.0)54.8 (42.6–65.6)63 (48.9–70.5)
  Basal metabolic rate, MJ/d, median (IQR)6.67 (5.88–7.58)6.49 (5.78–7.24)6.98 (6.04–7.79)
Preinjury activity (day before injury)
 TEE, MJ/d, median (IQR)12.2 (9.6–15.4)12.0 (8.9–15.1)12.2 (10.1–15.9)
 PAL, median (IQR)1.8 (1.5–2.2)1.8 (1.6–2.2)1.8 (1.4–2.2)
 AEE, MJ/d, median (IQR)3.9 (2.1–6.6)4.1 (2.3–6.5)3.7 (1.8–7.1)
 Moderate–high mental activity, median (IQR)2 h/d (0–9)0 h/d (0–9.3)3.0 h/d (0–7.5)
Risk factors of prolonged recovery
 Female gender, n (%)34 (34)18 (36)16 (33)
 Previous mTBI, n (%)6 (6)2 (2)4 (4)
 History of migraine, n (%)6 (6)2 (2)4 (4)
Mechanism of injury
 Sports, n (%)70 (71)33 (66)37 (76)
  Football27 (27)11 (22)16 (33)
  Basketball9 (18)6 (12)3 (6)
  Soccer9 (18)4 (8)5 (10)
  Baseball1 (1)1 (2)0 (0)
  Cheerleading3 (3)2 (4)1 (2)
  Biking2 (2)1 (2)1 (2)
  Other19 (19)8 (16)11 (22)
 MVC n (%)7 (7)3 (6)4 (8)
 Fall, n (%)15 (15)9 (18)6 (12)
 Assault, n (%)5 (5)4 (8)1 (2)
 Other, n (%)2 (2)1 (2)1 (2)
ED reported signs/symptoms
 Postconcussive symptoms, n (%)97 (98)48 (96)49 (100)
 Immediate symptoms,b n (%)72 (73)34 (68)38 (78)
 Loss of consciousness, n (%)36 (36)21 (42)15 (31)
 Anterograde amnesia, n (%)27 (27)10 (20)17 (35)
 Retrograde amnesia, n (%)18 (18)7 (14)11 (22)
 Seizure, n (%)1 (1)1 (2)0 (0)
ED evaluation
 Head computed tomography obtained, n (%)26 (26)11 (22)15 (30)
ED treatment
 Analgesic, n (%)73 (74)37 (74)36 (73)
 Antiemetic, n (%)21 (42)9 (18)12 (24)
  • AEE, activity-related energy expenditure; IQR, interquartile range; MVC, motor vehicle collision; PAL, physical activity level; TEE, total energy expenditure.

  • a P < .01.

  • b Symptoms include dazed or stunned, confused about events, answers questions slowly, and repeats questions.