Monitoring the Outcome of Phonosurgery and Vocal Exercises with Established and New Diagnostic Tools

Table 3

Results of correlation analysis.

		DSI	VEM	H	VHI-12	VHIs
Pretherapeutic	DSI	1	0.6	−0.4	−0.2	−0.3
	VEM	0.6	1	−0.7	−0.4	−0.3
	H	−0.4	−0.7	1	0.4	0.4
	VHI-12	−0.2	−0.4	0.4	1	0.6
	VHIs	−0.3	−0.3	0.4	0.6	1
	DSI	1	0.3	−0.3	−0.3	−0.3
	VEM	0.3	1	−0.7	−0.3	−0.4
Posttherapeutic	H	−0.3	−0.7	1	0.4	0.5
	VHI-12	−0.3	−0.3	0.4	1	0.7
	VHIs	−0.3	−0.4	0.5	0.7	1
	DSI	1	0.5	−0.3	−0.04 (ns)	−0.09 (ns)
	VEM	0.5	1	−0.4	−0.2	−0.2
Therapy-induced changes (Δ)	H	−0.3	−0.4	1	0.3	0.4
	VHI-12	−0.04 (ns)	−0.2	0.3	1	0.6
	VHIs	−0.09 (ns)	−0.2	0.4	0.6	1

All correlation coefficients were significant (), unless otherwise specified (ns = not significant).