Table 4.

Mean (95% Confidence Interval) Percentile Rank on Reading Achievement and Early Literacy Measures Across Groups.

	uAR	iCL	iCLP	iCP	uIR	F Statistic	p-value
Achievement
WI	61.20#	66.76#	44.76	35.3	17.12	21.404	<.001
	53.85–68.56	50.09–83.43	32.26-57.26	21.74-49.04	9.99-24.25
NWD^	59.53#	49.83	44.82	40.60	21.1’	20.189	<.001
	51.22–67.85	21.11–78.56	21.29-68.35	21.14-60.06	15.25-27.09
ORF^	55.12#	54.83#	39.36	27.2	14.63	21.564	<.001
	47.34–62.90	33.22–76.45	22.72-56.00	11.41–43	9.77-19.48
RComp	60.42#	78.27#	66.60	53.6	34.18	6.509	<.001
	50.81–70.03	56.52-100.03	49.43-83.77	35.81-71.41	24.73-43.63
LComp	81.20	77.97	89.31	66.77	75.82	1.444	.228
	73.32–89.08	61.31–94.63	76.03-102.59	49.42-84.12	68.71-82.94
Early Literacy
PhAw	68.32#	69.59	63.39	61.9	53.36	2.550	.045
	61.14–75.50	53.32–85.87	51.19-75.59	48.60-75.25	46.40-60.32
RAN^	55.00#	44.67	46.77	35.95	27.18	6.070	<.001
	45.01–64.99	29.23–60.10	29.19-64.36	22.90-49.00	20.08-34.27
RoteMem^	48.11#	39.92	43.59	28.70	31.35	6.828	.001
	42.52–53.70	10.46–69.38	24.30-62.88	22.96-34.44	23.19-39.50
AudWM	61.81#	52.06	51.80	51.90	38.39	4.420	.003
	53.44–70.17	34.35–69.78	38.41-65.18	33.45-70.34	30.83-45.96
VisWM	63.92	82.27	70.75	53.12	52.26	2.186	.078
	53.03–74.82	59.63-104.91	52.71-88.79	29.55-76.69	42.58-61.93
Attn	38.15	43.52	39.61	41.4	41.2	0.074	.990
	27.75–48.55	19.21–67.83	21.19-58.03	20.27-62.63	31.68-50.81

Notes.

^{^}Welch statistic due to heterogeneity of variance. WI = Word Identification. NWD = Nonword Decoding. ORF = Oral Reading Fluency. RComp = Reading Comprehension. LComp = Listening Comprehension. PhAw = Phonological Awareness. RAN = Rapid Automatized Naming, RoteMem = Auditory Rote Memory. AudWM = Auditory Working Memory. VisMem = Visual Memory. Attn = Attention.

^#Significantly higher than uIR. %Significantly higher than iCP.