Table 1.

Demographic characteristics

	Study 1 (n=959)		Study 2 (n=207)
	m	sd	m	sd
Age (8–18 years)	14.03	2.43	14.20	2.63
Sex	N	%	N	%
Male	281	29.3	48	23.2
Female	678	70.7	159	76.8
Race
White	762	79.5	181	87.4
African-American	84	8.8	9	4.3
Hispanic	49	5.1	2	1.0
Asian	2	0.2	3	1.4
Native American	3	0.1	0	0
More than one race	41	4.3	5	2.4
Other	13	1.4	1	0.5
Not reported	5	0.5	6	2.9

Note. There was a significantly greater proportion of White participants in Study 2 as compared with Study 1 (Chi-square = 6.87, p < 0.01).