Table 1. Category numbers of samples used for evaluation.

Age group	Category
	AF	AM	CF	CM	AAF	AAM	HF	HM
1–6	4	4	4	4	4	3	4	4
7–12	3	4	3	4	3	4	3	4
13–18	4	4	4	3	4	4	4	4

Ethnicity is denoted by

A: Asian

C: Caucasian

AA: African American

H: Hispanic; and Gender is

F: Female

M: Male