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Table 1 Frequencies of responses (as a percentage) in each response category

From: Examining the psychometric properties of a sport-related concussion survey: a Rasch measurement approach

Item Statement No Don’t know Yes
1 Abnormal sense of smell 0.32 0.41 0.27
2 Abnormal sense of taste 0.30 0.44 0.26
3 Loss of memory 0.03 0.01 0.95
4 Blurred vision 0.02 0.01 0.97
5 Chest pain 0.07 0.31 0.63
6 Dizziness 0.01 0.01 0.98
7 Confusion 0.02 0.01 0.97
8 Headache 0.02 0.01 0.97
9 Nosebleed 0.46 0.26 0.28
10 Loss of consciousness 0.03 0.01 0.96
11 Sharp burning pain in neck 0.38 0.39 0.23
12 Nausea 0.04 0.05 0.91
13 Numbness/tingling in arms/hands 0.44 0.34 0.22
14 Weakness of neck range of motion 0.49 0.31 0.19
15 Sleep disturbances 0.12 0.23 0.65
16 Problems studying or doing class work 0.09 0.21 0.70