. 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 1.

Descriptive statistics (M (SD)) and tests of group differences in demographic variables for full term-born (FT: n = 49) and preterm-born (PT: n = 45) children.

	FT	PT	χ² or t	p
Male (%)	51.0	50.0	0.04	1.0
Gestational Age (wks)	40.1 (1.1)	29.6 (1.9)	33.4	0.001 ^**
Birth Weight (g)	3550.7 (457.7)	1256.3 (277.3)	29.66	0.001 ^**
Maternal Education (yrs)	16.7 (1.4)	16.3 (1.9)	0.93	0.35
SES	59.7 (7.2)	56.6 (8.8)	1.88	0.06
Age: Time 1 (mos)	18.8 (0.6)	18.7 (0.6)	0.63	0.53
Age: Time 2 (mos)	55.5 (2.7)	54.4 (1.4)	2.56	0.02 ^*

Note: SES: Scores on an updated version of the Hollingshead Four Factor Index of Social Status⁶⁵.

p < 0.05

^**

p < 0.01

^***

p < 0.001