Table 4.

Group-based means (standard deviations), significance values, and effect sizes of weekly summary statistics for the voice parameters that showed significant interaction effects (diagnosis by phonation type) during the mixed analysis of variance, presented separately for each phonation type (singing and speech).

Variable	Speech				Singing
	Patient M (SD)	Control M (SD)	p	Cohen's d	Patient M (SD)	Control M (SD)	p	Cohen's d
H1–H2
Kurtosis	4.35 (0.73)	3.58 (0.49)	< .0001*	0.88	3.20 (0.55)	2.94 (0.45)	.0252	—
Dose
Phonation time (%)	7.96 (1.94)	6.32 (1.77)	< .0001*	0.67	2.02 (0.91)	2.63 (1.77)	.0262	—
Cycle dose (cycles/hr)	65,620 (14,632)	53,264 (15,922)	.0002*	0.61	26,073 (11,994)	37,930 (19,697)	.0098	—
Distance dose (m/hr)	268.30 (75.31)	212.67 (86.25)	.0010*	0.54	103.73 (51.30)	133.43 (78.35)	.0498	—

^*Significance at or below corrected α value (H₁–H₂ α = .025; Dose α = .0083).