Table 2 Scores on NEPSY Statue and WMS-III Spatial Span assessments, tested for group differences at each timepoint and for effect of group × time.

From: Trajectories of brain development in school-age children born preterm with very low birth weight

Assessment

Timepoint

n, VLBW, control

VLBW mean ± SD

Term-born mean ± SD

d

p-value

LME p-value

Statue

1

n = 26, 127

28.4 ± 3.1

27.6 ± 3.1

0.25

0.25

0.21

2

n = 29, 90

28.5 ± 2

28.7 ± 1.9

−0.13

0.55

Spatial span

1

n = 26, 128

11.7 ± 2.9

12.6 ± 2.9

−0.32

0.14

0.51

2

n = 29, 87

12.1 ± 2.9

13.9 ± 2.9

−0.62

0.005*

  1. Group differences tested using the general linear model, controlled for age, shown with effect size and number of participants included in each analysis. Statistically significant results are denoted by *. LME p-value refers to the longitudinal interaction analyses (score × time). Abbreviations: CI: confidence interval; d: Cohen’s d; LME: linear mixed effects; VLBW: very low birth weight.
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