. Author manuscript; available in PMC: 2011 Jan 1.

Published in final edited form as: J Clin Child Adolesc Psychol. 2010;39(4):492–505. doi: 10.1080/15374416.2010.486321

Table 1.

Demographics Characteristics for Children at Age 5 (n = 236)

	Delayed	Typically Developing	χ² or t	Effect Size (Cohen’s d or odds ratio)
	n = 95	n = 141	χ² or t	Effect Size (Cohen’s d or odds ratio)
Children
Gender (% boys)	60.0	56.7	χ² = 0.13	OR=1.14
Race (% Caucasian)	58.5	61.0	χ² = 0.06	OR=0.90
Stanford Binet IQ	60.2 (15.4)	103.5 (11.4)	t=23.36^***	d=5.18
Parent and family
Marital Status (% married)	76.6	83.7	χ²=1.40	OR=.64
Mother’s Race (% Caucasian)	57.4	67.4	χ²=2.40	OR=.65
Mother’s Education (Mean grade in school)	14.4 (2.1)	15.5 (2.4)	t = 4.02^***	d=0.53
Mothers’ Mean Age in Years (SD)	34.9 (6.2)	36.1 (5.8)	t = 1.52	d=0.20
Family Annual Income (% > $50K)	47.9	61.4	χ² = 3.66	OR=.58
	n=81	n=134
Father’s Education (Mean grade in school)	14.4 (2.6)	15.8 (3.0)	t = 3.28^**	d=0.48
Fathers’ Mean Age in Years (SD)	38.6 (7.1)	38.5 (6.2)	t = 0.15	d=0.02

^**

p < .01;

^***

p < .001