Table 4.

Univariate Comparisons of Mean Neurobehavioral Test Scores for Cases versus Matched Controls (Paired t Tests)

				Difference
Test Measure	No. of Pairs	Cases, Mean (SD)	Controls, Mean (SD)	Mean (SD)	95% CI	Effect Sizes†	p
BSID-II MDI	125	91.92 (9.19)	94.89 (8.52)	−2.97 (11.56)	−5.02 to −0.92	−0.34	0.005
BSID-II PDI	125	84.0 (12.03)	88.82 (11.31)	−4.74 (15.91)	−7.56 to −1.93	−0.41	0.001
PLS-3 AC*	123	91.97 (13.13)	94.46 (11.74)	−2.50 (15.07)	−5.19 to 0.19	−0.20	0.069
PLS-3 EC*	124	96.65 (14.45)	97.31 (13.48)	−0.6 (18.34)	−3.92 to 2.60	−0.05	0.689
Maternal IQ	105	107.05 (12.08)	109.15 (12.29)	−2.10 (13.24)	−4.67 to 0.46	−0.17	0.106

CI, confidence interval; BSID-II, Bayley Scales of Infant Development, Second Edition; MDI, Mental Development Index; PDI, Psychomotor Development Index; PLS, Preschool Language Scale, Third Edition; AC, Auditory Comprehension; EC, Expressive Communication.

^*Standard score.

^†Mean difference effect size.