Table 2.

Follow-up t-tests for Significant Main Effects of Prematurity and Reading Clusters on Neuropsychological Skills

	Birth Status		Reading Clusters
	Term vs Low Risk	Term vs High Risk	Excel vs Average	Excel vs Poor	Average vs Poor
Language
Receptive			t(191) = 5.16++	t(191) = 9.60++	t(193) = 4.95++
Slope			t(191) = 2.14*	t(191) = 3.83++
Expressive			t(191) = 5.67++	t(191) = 8.89++	t(193) = 3.75++
Verbal Cognitive
Vocabulary			t(193) = 5.97+++	t(193) = 8.18+++	t(193) = 2.77+
Comprehension			t(193) = 5.32+++	t(193) = 7.14+++	t(193) = 2.25*
Absurdities	t(193) = 3.86++	t(193) = 3.57+++	t(193) = 4.07+++	t(193) = 5.83+++	t(193) = 2.15*
Nonverbal Cognitive
Pattern Analysis	t(193) = 2.69+	t(193) = 2.88+	t(193) = 3.56++	t(193) = 6.09+++	t(193) = 2.88+
Quantitative			t(193) = 6.15+++	t(193) = 7.37+++
Slope			t(193) = 3.03+	t(193) = 3.79*
Memory
Sentences			t(194) = 3.39++	t(194) = 5.17+++	t(194) = 2.13*
Beads	t(191) = 3.09+	t(191) = 3.29++	t(191) = 2.57+	t(191) = 4.41+++	t(191) = 2.09*
Executive Functioning
Inattentiveness			t(162) = 2.30**	t(162) = 5.45+++	t(193) = 2.72+
Planning Time	t(205) = 3.56++	t(205) = 2.98+
Total Solutions	t(205) = 2.46**		t(205) = 3.85++

Note. Language = Clinical Evaluation of Language Fundamentals; Cognitive/Memory = Stanford-Binet, 4^th Ed., Inattentiveness = Continuous Performance Test; Initial Planning Time and Total Solutions = Tower of London; Significant effects are for intercept parameters unless otherwise indicated

^*p < .05

^**p < .02

⁺p < .01

⁺⁺p < .001

⁺⁺⁺p < .0001