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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