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Table 4 Incidence of non-zero responses for the self-reported Subjective Units of Discomfort (SUDS) and Simulator Sickness Questionnaire (SSQ) subscales and total score, as a function of trial number. Mean incidence, χ2 test of association, and p value are also provided. No significant effect of trial number was found.

From: Simulator sickness when performing gaze shifts within a wide field of view optic flow environment: preliminary evidence for using virtual reality in vestibular rehabilitation

Trial SUDS SSQ:Nausea SSQ:Oculomotor SSQ:Disorientation SSQ:Total
0 (initial) 4 7 11 0 11
1 17 6 15 2 15
2 24 9 24 11 31
3 28 13 28 2 30
4 30 13 31 6 33
5 26 15 35 6 37
6 30 15 39 7 41
7 32 15 38 8 40
8 34 17 40 8 40
Mean 25 12 29 5 31
χ2 15.0 5.2 16.0 8.0 16.2
p-value .06 .73 .04 .43 .04