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. Author manuscript; available in PMC: 2018 May 9.
Published in final edited form as: Arch Otolaryngol Head Neck Surg. 2012 Oct;138(10):929–935. doi: 10.1001/2013.jamaoto.122

Table 2.

Internal Consistency by Cronbach's Alpha of VELO for total and domains

Cronbach’s Alpha
Domain Description Parent VPI subjects
Total Score 0.96 0.95
  Speech Limitation 0.87 0.88
  Swallowing 0.85 0.80
  Situational Difficulty 0.93 0.92
  Emotional Impact 0.89 0.78
  Perception by Others 0.84 0.86
  Caregiver Impact 0.77 -