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. Author manuscript; available in PMC: 2015 Jul 1.
Published in final edited form as: Neuropsychology. 2014 Apr 7;28(4):552–562. doi: 10.1037/neu0000071

Table 2. Differences between the VPT and term children on attention and processing speed outcomes at age 7 years.

VPT Group Term Group Unadjusted Adjusted for age, social risk, gender and excluding children with IQ < 70a

Outcome N M(SD) N M(SD) Est(95% CI) p Est(95% CI) p
Attention
Sky Search 191 15.70 (3.97) 69 17.77 (2.50) -2.07(-2.90, -1.24) <.001 -1.71(-2.59, -0.83) <.001
Score! 182 6.03 (2.63) 69 7.10 (1.90) -1.07(-1.66, -0.48) <.001 -0.76(-1.38, -0.14) 0.02
Creature Counting 160 3.29 (2.30) 69 4.57 (1.97) -1.27(-1.85, -0.69) <.001 -1.18(-1.77, -0.59) <.001
Sky Search DT 175 69.78 (20.03) 69 78.95 (16.18) -9.17(-14.08, -4.26) <.001 -6.28(-11.43, -1.13) 0.02
Processing Speed
Identification Task 178 2.90(0.07) 69 2.87(0.08) 0.03 (0.00, 0.05) 0.03 0.02(-0.00, 0.04) 0.06
Detection Task 179 2.70 (0.09) 69 2.67(0.11) 0.03 (0.01, 0.06) 0.02 0.04 (0.01, 0.06) 0.01

VPT, very preterm; M, mean; SD, standard deviation; Est, estimate of regression coefficient representing the difference in means between the groups; CI, confidence interval.

a

= up to 11 participants with missing data on social risk and up to 3 participants with IQ<70 not included in these analyses.

Bold text indicates statistically significant values.