Table 2.

Sociodemographic Characteristics (Time 1) of the Whole Sample, Intervention Group, and Control Group

	All students (n = 375)	Intervention Group (n = 66)	Control Group (n = 309)
Mean Age ± SD, y (Range 2.8 - 4.7)	3.6 ± 0.32	3.6 ± 0.31	3.6 ± 0.33
Gender, % male	49	48	49
Free lunch, %	51	64	48
Ethnicity
Asian	2%	2%	2%
Black	3%	2%	4%
Hispanic	54%	65%	51%
Indian	1%	0%	1%
Polynesian	5%	9%	4%
White	29%	8%	33%
Other	3%	3%	3%
NA	4%	12%	3%
No. of classes	19	3	16
Class size, mean (range)	19.7 (11–28)	19.3 (18–26)	22.0 (11–28)

Abbreviations: NA, not available; SD, standard deviation.