. 2022 Feb 8;65(3):843–857. doi: 10.1044/2021_JSLHR-21-00213

Table 2.

Correlations between severity, intelligibility, and age.

Measure		Intelligibility measures			Severity measures
Measure		PPC	Overall mean intelligibility	GFTA-2 raw	Overall mean severity	Total CAS signs	Unique CAS signs	GFTA-2 SS
	Age	.546^*	.431^*	−.639^*	−.494^*	−.228	−.446	−.048
Intelligibility measures	PPC		.945^*	−.926^*	−.972^*	−.788^*	−.582^*	.438^*
	Overall mean intelligibility			−.868^*	−.959^*	−.819^*	−.541^*	−.409^*
	GFTA-2 raw				.937^*	.749^*	.671^*	−.544^*
Severity measures	Overall mean severity					.830^*	.609^*	−.498^*
	Total CAS signs						.567^*	−.546^*
	Unique CAS signs							−.453^*

Note. PPC = percent phonemes correct from GFTA-2 responses; GFTA-2 raw: Goldman-Fristoe Test of Articulation–Second Edition raw score; CAS = childhood apraxia of speech; GFTA-2 SS: Goldman-Fristoe Test of Articulation–Second Edition standard score.

p < .05.