. Author manuscript; available in PMC: 2024 Aug 1.

Published in final edited form as: Child Neuropsychol. 2022 Nov 2;29(6):886–905. doi: 10.1080/09297049.2022.2138304

Table 2.

Descriptive statistics (M (SD)) and tests of group differences on behavioral assessments in full term-born (FT: n = 49) and preterm-born (PT: n = 45) children at 18 months and 4 ½ years

	FT	PT	t	p
18 mos
Acc	0.66 (.10)	0.63 (.11)	1.50	0.14
RT	724 (147)	771 (167)	1.44	0.15
4 ½ years
Receptive Vocabulary	122.1 (16.6)	110.2 (18.7)	3.25	0.002 ^**
Expressive Language	116.4 (14.0)	107.6 (14.9)	2.99	0.003 ^**
Non-Verbal IQ	109.6 (15.8)	96.7 (20.2)	3.43	0.001 ^***

Note: Acc: Proportion looking to target on the looking-while-listening task ⁶; RT: Mean response time on the looking-while-listening task ⁶; Receptive Vocabulary: Standard scores on the Peabody Picture Vocabulary Test – 4^th Edition (PPVT-4) ⁶⁷; Expressive Language: Standard scores on the Clinical Evaluation of Language Fundamentals-Preschool, 2^nd Edition (CELF-P2) ⁶⁸; Non-Verbal IQ: Brief-IQ from Leiter-R⁶⁹.

p < 0.05

^**

p < 0.01

^***

p < 0.001