Table 1.

Control total Voice Handicap Index (VHI) change scores.

Subject	Pre-VHI	Post-VHI	Change
F19	45	46	1
F20	16	18	2
F21	66	36	−30
F23	25	33	8
F25	26	27	1
F26	36	46	10
F27	52	46	−6
F28	25	23	−2
F29	38	37	−1
M16	71	68	−3
Average	40	38	−2
SD	18.4	14.4	11.0