Table 3.

Baseline (Time 1) Analysis of Variance of Development Scales by Intervention Grouping and by Gender, Ethnicity, and Family Socioeconomic Status^a

	Mean	SD	SEM	Mean	SD	SEM	Mean	SD	SEM	ANOVA between Groups
										Mean Sq	F	ES	P <
	Intervention Group (N=66)			Control Group (N=309)
Total Development Score	39.47	16.20	1.99	49.47	19.34	1.10				5434.40	15.33	0.56	.001
Social/Emotional Development Score	9.62	4.45	0.55	12.83	5.32	0.30				558.30	20.83	0.66	.001
Physical Development Score	8.33	2.19	0.27	9.49	2.93	0.17				73.00	9.23	0.45	.01
Cognitive Development Score	11.71	5.85	0.72	14.36	7.09	0.40				382.01	8.05	0.41	.01
Language Development Score	9.80	5.48	0.67	12.79	5.99	0.34				484.05	13.91	0.52	.001
	Male (N=178)			Female (N=189)
Total Development Score	47.25	19.62	1.47	48.01	18.93	1.38				52.68	0.14	0.04	ns
Social/Emotional Development Score	11.98	5.40	0.40	12.46	5.30	0.39				20.87	0.73	0.09	ns
Physical Development Score	9.31	3.01	0.23	9.29	2.72	0.20				0.08	0.01	0.01	ns
Cognitive Development Score	13.92	7.15	0.54	13.78	6.79	0.49				1.89	0.04	0.02	ns
Language Development Score	12.03	6.17	0.46	12.48	5.86	0.43				18.84	0.52	0.08	ns
	Hispanic (N=202)			White (N=108)			Other (N=65)
Total Development Score	43.34	15.87	1.12	56.70	20.95	2.02	46.34	20.66	2.56	6360.78	18.94	0.47	.001
Social/Emotional Development Score	11.49	4.65	0.33	13.94	5.86	0.56	11.88	5.72	0.71	216.17	7.94	0.30	.001
Physical Development Score	9.13	2.46	0.17	9.78	3.20	0.31	8.97	3.25	0.40	18.82	2.35	0.18	ns
Cognitive Development Score	12.25	5.70	0.40	17.28	7.84	0.75	13.38	7.03	0.87	898.88	20.54	0.49	.001
Language Development Score	10.47	4.97	0.35	15.71	6.08	0.58	12.11	6.37	0.79	969.89	31.30	0.60	.001
	Non–Free Lunch (N=184)			Free Lunch (N=191)
Total Development Score	50.98	20.88	1.54	44.55	16.86	1.22				3879.50	10.82	0.34	.01
Social/Emotional Development Score	12.93	5.67	0.42	11.61	4.88	0.35				163.84	5.88	0.25	.05
Physical Development Score	9.49	3.12	0.23	9.09	2.54	0.18				15.41	1.91	0.14	ns
Cognitive Development Score	15.22	7.46	0.55	12.62	6.18	0.45				635.98	13.60	0.38	.001
Language Development Score	13.33	6.47	0.48	11.23	5.33	0.39				413.75	11.82	0.36	.001

^aSingle-factor ANOVA.

Abbreviations: ANOVA, analysis of variance; ES, effect size; F, ANOVA test statistic; NS, not significant; SEM, standard error of measurement; Sq, square.