In order to correlate the VIII scores with objective findings in the nonprofessional and professional voice user groups, we created the Voice Handicap Distress Index (VHDI), with normal values adjusted for sex.
VHDI. The professional voice users had a higher mean VHDI (13.63 [+ or -] 5.40) than did the nonprofessional voice users (7.22 [+ or -] 6.26); the difference was statistically significant (p = 0.02) (table 4).
To determine whether perceptions of voice handicaps are greater in professional voice users than in nonprofessional voice users, we created the VHDI. Our results suggest that all aspects of the VHI were more significantly affected in professional voice users.