Table 6.

Speech findings for 14 participants with concurrent Speech Delay and early Speech Motor Delay (SMD) treated for Speech Delay.

	Normalized SMD by 9 years of age (n = 11)				Persistent SMD (n = 3)				Between-group Comparisons
Variable	n	M	SD	%	n	M	SD	%	Confidence Interval	Effect Size	p-valuea
Demographic
Gender (male)	11			81.8	3			100.0			1.000
Age (yrs)	11	4.5	0.9		3	4.3	0.6		−1.06, 1.50	0.22
Speechb
PCC	11	66.6	11.6		3	71.6	7.3		−1.71, 0.86	−0.43
PCC-Z	11	−3.30	1.15		3	−2.37	1.50		−2.02, 0.59	−0.72
PCCR	11	72.0	12.2		3	80.5	8.0		−1.99, 0.62	−0.69
PCCR-Z	11	−4.19	1.04		3	−2.97	1.89		−2.26, 0.39	−0.93
PVC	11	90.6	5.5		3	91.2	0.9		−1.39, 1.17	−0.11
PVC-Z	11	−3.58	1.67		3	−4.74	0.45		−0.60, 2.01	0.71
II	11	86.4	9.7		3	87.6	14.9		−1.38, 1.17	−0.10
II-Z	11	−3.55	2.12		3	−2.65	2.09		−1.68, 0.89	−0.40
OIIc: % Lowered Intelligibility				54.5				33.3			1.000

Notes: PCC = Percentage of Consonants Correct; PCC-Z = Percentage of Consonants Correct-Z-score; PCCR = Percentage of Consonants Correct-Revised; PCCR-Z = Percentage of Consonants Correct-Revised-Z-score; PVC = Percentage of Vowels Correct; PVC-Z = Percentage of Vowels Correct-Z-score; II = Intelligibility Index; II-Z – Intelligibility Index-Z-score; OII = Ordinal Intelligibility Index.

^aFisher’s exact tests.

^bAt first assessment.

^cMabie and Shriberg (2017). Lowered intelligibility: <85%.