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Table 2 Sample size and power calculations for the trial

From: Effectiveness of conventional versus virtual reality based vestibular rehabilitation in the treatment of dizziness, gait and balance impairment in adults with unilateral peripheral vestibular loss: a randomised controlled trial

Outcome Measure Mean Change Expected SD Sample Size Required (per group)
Gait Velocity (m/sec) 0.1 0.15 36
Vestibular Rehabilitation Benefit -7 10.1 33
Questionnaire (%) [25]    
Static Posturography (% composite score)[31] 10 15 36
Dynamic Visual Acuity (LogMAR) [32] 0.1 .136 30