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. Author manuscript; available in PMC: 2018 Feb 20.
Published in final edited form as: J Child Psychol Psychiatry. 2013 Dec 9;55(5):485–494. doi: 10.1111/jcpp.12178

Table 3. Group Differences in Early Childhood for Cognitively More Able Youths.

Measure VIQ ≥ 70-ASD
N=24
Very Positive
N=8
95% Confidence Interval Effect Size (Unadjusted) P value1

M (S.D.) M (S.D.) (VIQ > 70-ASD/VP) Eta2
RRB Total (ADOS)
 Age 2 2.5 (1.72) 3.3 (3.02) (1.8, 3.2/ .80, 5.8) .03 .34
 Change 2 to 3 0.83 (2.19) -1.7 (2.73) (-.10, 1.8/ -3.9, .62) .19 .01*
Social Deficits Total (ADOS)
 Age 2 14 (4.94) 12 (3.67) (12, 16/ 9, 15) .03 .37
 Change 2 to 3 -3.6 (5.22) -4.4 (4.16) (-5.8, -1.4/ -8.0, -.95) .01 .68
Adaptive Skills Vineland)
 Age 2 67 (9.77) 65 (6.39) (63, 71/ 59, 70) .01 .54
 Change 2 to 3 2.2 (13.29) 3.9 (9.54) (-3.4, 7.8/ -4.1, 11.8) < .01 .74
% Yes % Yes Phi
Mother's w/College Degree2 54 62 .07 .50
Some Treatment
 From 2 to 3 54 100 .42 .02*
Hyperactivity (ADI-R item)
 Age 2 45 25 -.18 .42
 Age 3 50 0 -.45 .01*
1

Asterisks indicate that alpha remained significant at p < .05 after adjustment for multiple comparisons.

2

Measured at baseline.