Table 3.

The linear regression results on Hospital Anxiety and Depression Scale -Depression score.

Variable	Full model			Selected model based on AIC			Reduced model
	Effect	SE	p-value	Effect	SE	p-value	Effect	SE	p-value
DSSES	−0.291	0.075	<0.001	−0.366	0.047	<0.001	−0.391	0.046	<0.001
Age	−0.031	0.018	0.084	−0.029	0.017	0.083
VHI-10	0.048	0.031	0.128	0.046	0.029	0.118
Employment	−0.656	0.493	0.186	−0.768	0.461	0.098
CAPEV-O	−0.013	0.019	0.503
CAPEV-R	0.012	0.011	0.306
CAPEV-B	0.000	0.024	0.996
CAPEV-S	−0.003	0.015	0.823
CAPEV-P	−0.005	0.013	0.712
CAPEV-L	0.018	0.017	0.298
Gender	−0.327	0.487	0.503
SD Type	0.271	1.133	0.811
GSES	−0.074	0.062	0.232
R2	39.85%			37.82%			34.91%
adjusted R2	33.38%			35.91%			34.42%

DSES: Disease Specific Self-Efficacy in Spasmodic Dysphonia scale.

VHI–10: Voice handicap index 10.

CAPEV-O: Consensus uditory Perceptual Evaluation of Voice – overall.

CAPEV-R: Consensus uditory Perceptual Evaluation of Voice – roughness.

CAPEV-B: Consensus Auditory Perceptual Evaluation of Voice – breathiness.

CAPEV-S: Consensus Auditory Perceptual Evaluation of Voice – strain.

CAPEV-P: Consensus Auditory Perceptual Evaluation of Voice – pitch.

CAPEV-L: Consensus Auditory Perceptual Evaluation of Voice – loudness.

SD: Spasmodic dysphonia.

GSES: General Self Efficacy scale.