Table 1. 95% confidence interval (95% CI) of the comparison between the moment’s pre- and postintervention and voice-related quality of life (V-RQOL) scores in 17 IGHD subjects.

Parameters	t	Mean difference	95% CI
Total V-RQOL	-9.44	-18.8	-23.01 to -14.7
Physical V-RQOL	-11.8	-24.7	-29.02 to -20.33
Socioemotional V-RQOL	-4.67	-11.9	-17.19 to -6.58

HNR: harmonic-to-noise ratio.