Table 3.

Means and standard deviation for intelligibility and number of utterances per group

			Intelligibility			Total Utterances			C & I Utterances
Group	Age Range	N	Mean	Std Dev	Cohen’s d Effect Size	Mean	Std Dev	Cohen’s d Effect Size	Mean	Std Dev	Cohen’s d Effect Size
Affected	2;6 - 2;11	6	0.74	0.15	1.10	235.2	63.3	0.48	155.5	54.8	0.95
Affected	3;0 - 3;5	15	0.79	0.16	1.94	261.3	78.0	0.14	177.6	66.2	0.73
Affected	3;6 - 3;11	24	0.84	0.08	0.81	249.0	89.3	0.13	176.8	66.4	0.48
Affected	4;0 - 4;5	54	0.83	0.12	1.08	282.6	93.8	0.00	198.2	76.4	0.36
Affected	4;6 - 4;11	72	0.87	0.10	1.11	284.7	71.3	−0.08	213.2	63.5	0.27
Affected	5;0 - 5;5	84	0.91	0.06	0.67	292.1	76.2	−0.29	223.1	55.8	0.01
Affected	5;6 - 5;11	97	0.91	0.06	0.57	289.0	83.6	−0.14	222.5	64.3	0.02
Affected	6;0 - 6;5	108	0.92	0.06	0.30	275.7	86.1	0.18	217.2	68.4	0.26
Affected	6;6 - 6;11	94	0.92	0.06	0.23	281.2	97.0	0.05	214.5	73.1	0.17
Affected	7;0 - 7;5	103	0.92	0.06	0.57	277.0	97.9	−0.02	217.1	77.0	0.06
Affected	7;6 - 7;11	100	0.92	0.06	0.18	280.0	89.0	−0.09	217.4	76.5	0.01
Affected	8;0 - 8;5	94	0.93	0.06	0.73	266.1	91.8	0.13	212.4	78.5	0.21
Affected	8;6 - 8;11	61	0.94	0.05	−0.02	289.7	93.9	−0.10	227.9	76.9	0.00
Unaffected	2;6 - 2;11	17	0.86	0.11		265.6	64.0		219.1	66.6
Unaffected	3;0 - 3;5	29	0.91	0.06		271.5	74.5		219.1	56.9
Unaffected	3;6 - 3;11	38	0.92	0.09		256.2	53.8		203.9	56.6
Unaffected	4;0 - 4;5	49	0.91	0.08		282.6	75.3		224.2	72.7
Unaffected	4;6 - 4;11	74	0.94	0.06		278.1	77.6		232.0	69.8
Unaffected	5;0 - 5;5	78	0.94	0.05		274.0	62.7		223.6	51.0
Unaffected	5;6 - 5;11	77	0.94	0.05		278.2	79.9		224.0	65.0
Unaffected	6;0 - 6;5	70	0.93	0.05		291.2	86.2		236.3	72.2
Unaffected	6;6 - 6;11	63	0.93	0.07		285.7	96.6		228.3	80.6
Unaffected	7;0 - 7;5	51	0.94	0.04		275.6	90.3		221.5	77.4
Unaffected	7;6 - 7;11	47	0.93	0.06		271.5	94.5		218.0	79.3
Unaffected	8;0 - 8;5	41	0.95	0.04		278.0	92.9		229.7	81.8
Unaffected	8;6 – 8;11	18	0.93	0.06		280.1	98.6		228.2	80.6