. Author manuscript; available in PMC: 2010 Oct 1.

Published in final edited form as: J Speech Lang Hear Res. 2009 Jul 27;52(5):1189–1212. doi: 10.1044/1092-4388(2009/08-0047)

Table 5.

Group t-test and effect size data assessing the NRT and SRT tasks' ability to discriminate (a) speakers with typical language (TL) from speakers with expressive language involvement (ELI), (b) speakers with typical speech (TS) from speakers with Speech Delay (SD), and( c) speakers with TL-TS from speakers with TL-SD.

Measure; Age group		Typical Language			Expresssive Language Involvement			Effect Size ^a		Likelihood Ratios				Diagnostic Accuracy
		n	M	SD	n	M	SD	ES	CI	Pos.	CI	Neg.	CI	%	CI
NRT
1	3;0–3;5	34	50.9	17.1	13	32.7	15.4	1.08	0.40/1.75	2.14	1.17/3.92	.455	.196/1.06	68.1^*	52.7/80.5
2	3;6–3;11	18	68.9	12.4	22	50.1	17.5	1.20	0.52/1.87	4.64	1.61/13.3	.273	.123/.602	80.0^*	63.9/90.4
3	4;0–4;5	35	66.1	15.4	13	53.6	10.2	0.87	0.21/1.53	2.20	1.20/4.05	.449	.194/1.04	68.8^*	53.6/80.9
4	4;6+	18	72.5	11.6	6	57.3	21.7	1.01	0.04/1.98	2.00	.843/4.75	.500	.153/1.64	66.7	44.7/83.6
	ALL	105	62.8	17.0	54	47.5	17.9	0.88	0.54/1.22	2.12	1.52/2.94	.466	.311/.696	67.9^*	60.0/75.0
SRT
1	3;0–3;5	34	65.9	17.1	13	44.0	18.3	1.23	0.53/1.94	2.32	1.29/4.16	.370	.135/1.01	69.6^*	54.1/81.8
2	3;6–3;11	18	76.4	13.1	22	62.6	20.4	0.78	0.13/1.43	2.74	1.25/6.00	.330	.147/.739	74.4^*	57.6/86.4
3	4;0–4;5	35	74.6	15.5	13	59.7	15.5	0.95	0.28/1.61	2.45	1.38/4.34	.337	.122/.932	70.8^*	55.7/82.6
4	4;6+	18	79.3	13.7	6	74.0	19.7	0.34	−0.59/1.27	1.00	.397/2.52	1.00	.403/2.48	50.0	29.6/70.4
	ALL	105	72.9	16.0	54	58.9	20.4	0.79	0.45/1.14	2.08	1.51/2.85	.439	.284/.679	67.5^*	59.5/74.6

		Typical Speech			Speech Delay			Effect Size ^a		Likelihood Ratios				Diagnostic Accuracy

		n	M	SD	n	M	SD	ES	CI	Pos.	CI	Neg.	CI	%	CI

NRT
1	3;0–3;5	16	59.7	14.5	30	39.4	16.0	1.29	0.63/1.95	2.93	1.22/7.04	.356	.189/.670	73.9^*	58.6/85.2
2	3;6–3;11	20	66.4	14.7	20	50.5	18.2	0.95	0.30/1.60	4.00	1.62/9.87	.250	.102/.616	80.0^*	63.9/90.4
3	4;0–4;5	19	74.9	12.2	29	54.8	11.2	1.71	1.04/2.38	3.60	1.47/8.82	.306	.156/.599	77.1^*	62.3/87.5
4	4;6+	8	80.1	6.9	16	63.0	15.9	1.20	0.29/2.12	3.00	.874/10.3	.333	.131/.845	75.0^*	52.9/89.4
	ALL	63	69.0	14.7	95	50.4	17.2	1.14	0.80/1.48	2.65	1.73/4.06	.389	.280/.542	72.2^*	64.4/78.8
SRT
1	3;0–3;5	16	70.6	16.1	30	56.0	18.1	0.83	0.19/1.46	2.21	1.03/4.75	.451	.248/.821	68.9^*	53.2/81.4
2	3;6–3;11	20	74.3	16.1	20	63.4	19.8	0.60	−0.05/1.24	2.28	1.09/4.76	.451	.223/.912	69.2^*	52.3/82.5
3	4;0–4;5	19	77.8	13.9	29	65.9	16.9	0.74	0.14/1.34	2.18	1.08/4.42	.454	.251/.818	68.8^*	53.6/80.9
4	4;6+	8	89.0	8.4	16	72.5	14.8	1.21	0.30/2.13	3.00	.874/10.3	.333	.131/.845	75.0^*	52.9/89.4
	ALL	63	76.3	15.4	95	63.4	18.2	0.75	0.42/1.08	2.55	1.66/3.92	.427	.312/.584	70.5^*	62.6/77.4

		Typical Language- Typical Speech			Typical Language- Speech Delay			Effect Size ^a		Likelihood Ratios				Diagnostic Accuracy

		n	M	SD	n	M	SD	ES	CI	Pos.	CI	Neg.	CI	%	CI

NRT
1 & 2	3;0–3;11	29	65.1	13.8	23	47.2	17.3	1.14	0.55/1.73	2.68	1.42/5.07	.360	.176/.735	73.1^*	58.7/84.0
3 & 4	4;0–4;6+	23	77.5	11.2	30	61.3	12.7	1.33	0.73/1.93	2.81	1.37/5.78	.361	.193/.673	73.6^*	59.4/84.3
	ALL	52	70.6	14.1	53	55.2	16.3	1.01	0.60/1.41	2.27	1.45/3.54	.436	.285/.668	69.5^*	59.7/77.9
SRT
1 & 2	3;0–3;11	29	74.2	15.6	23	63.6	15.9	0.66	0.10/1.22	2.10	1.13/3.90	.504	.280/.910	67.3^*	52.8/79.3
3 & 4	4;0–4;6+	23	81.0	13.8	30	72.5	14.9	0.58	0.03/1.13	1.62	.908/2.88	.602	.356/1.02	62.3	47.9/74.9
	ALL	52	77.2	15.1	53	68.7	15.9	0.55	0.16/0.94	1.59	1.08/2.34	.601	.409/.884	61.9^*	51.9/71.1

Significant effect sizes are bolded.

Fisher exact test < .05.