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Table 6 Mean (and SD) symptom score on six-point scalea

From: Epidemiology of sports-related concussion in seven US high school and collegiate sports

  Time of injury (n = 238)1 Post-competition (n = 218) Day 1 (n = 297) Day 2 (n = 293) Days 3–4 (n = 325) Days 5–6 (n = 314) Days 7–9 (n = 300)
Somatic group 1        
 Headache 3.38 (1.42) 3.20 (1.40) 2.79 (1.38) 2.31 (1.11) 2.36 (1.30) 2.05 (1.31) 1.93 (1.23)
 Balance problems/dizziness 3.07 (1.33) 2.53 (1.33) 1.99 (1.16) 1.91 (1.21) 2.10 (1.20) 1.80 (1.11) 1.71 (1.12)
 Nausea 2.73 (1.33) 2.13 (1.39) 2.11 (1.27) 1.87 (1.16) 2.14 (1.21) 1.92 (1.26) 2.00 (1.41)
 Blurred vision 2.76 (1.30) 2.37 (1.34) 1.97 (1.12) 1.68 (0.89) 1.80 (0.95) 1.54 (0.88) 1.28 (0.57)
 Numbness/tingling 2.41 (1.41) 2.11 (1.37) 1.68 (1.1.6) 1.83 (1.15) 1.75 (1.42) 3.25 (2.06) 1.60 (0.89)
 Vomiting 3.12 (1.36) 3.33 (1.87) 3.00 (0.94) 2.38 (1.06) 2.44 (1.51) 2.00 (0.63) 2.33 (2.31)
Somatic group 2        
 Drowsiness 2.83 (1.36) 2.83 (1.50) 2.45 (1.32) 2.05 (1.25) 2.15 (1.31) 2.19 (1.44) 1.84 (1.24)
 Fatigue 2.87 (1.50) 2.97 (1.53) 2.54 (1.35) 2.34 (1.29) 2.29 (1.37) 2.05 (1.23) 1.83 (1.35)
 Sensitivity to light 2.84 (1.43) 2.70 (1.60) 2.31 (1.27) 1.82 (1.02) 1.94 (1.16) 1.71 (1.03) 1.40 (0.76)
 Sensitivity to noise 2.96 (1.44) 2.74 (1.55) 2.38 (1.24) 1.78 (1.03) 1.85 (1.11) 1.64 (0.93) 1.52 (0.75)
Cognitive        
 Difficulty concentrating 2.98 (1.46) 2.66 (1.45) 2.28 (1.28) 2.03 (1.20) 2.13 (1.30) 2.08 (1.34) 1.79 (1.39)
 Feeling “in a fog” 2.95 (1.44) 2.74 (1.40) 2.31 (1.34) 1.92 (1.20) 2.05 (1.22) 2.00 (1.27) 1.81 (1.20)
 Difficulty remembering 3.17 (1.54) 2.65 (1.54) 2.18 (1.29) 2.04 (1.25) 2.21 (1.33) 2.28 (1.48) 1.53 (0.94)
Neurobehavioral        
 Sleeping more than usual 3.00 (1.24) 3.33 (1.46) 2.81 (1.44) 2.52 (1.39) 2.49 (1.39) 2.15 (1.30) 2.00 (1.58)
 Trouble sleeping 3.13 (1.46) 3.05 (1.94) 2.66 (1.52) 2.28 (1.57) 2.48 (1.47) 2.39 (1.48) 2.13 (1.54)
 Irritability 3.00 (1.49) 2.90 (1.59) 2.43 (1.36) 1.85 (1.03) 2.07 (1.28) 2.09 (1.43) 2.21 (1.61)
 Sadness 2.76 (1.48) 2.73 (1.44) 2.57 (1.50) 1.67 (0.91) 2.32 (1.70) 1.92 (1.12) 1.55 (0.82)
  1. Means and SDs in the table are based only on those subjects who reported each symptom, i.e., subjects who did not report that symptom on that day are not included. Number of subjects assessed by day for pooled time points: day 3 n = 289, day 4 n = 36, day 5 n = 269, day 6 n = 45, day 7 n = 252, day 8 n = 38, and day 9 n = 10. Numbers do not add to total since some subjects contribute more than once to a pooled time point
  2. a n number of subjects assessed at each time point