Table 1.

Descriptive data of participants.

Years	n (boys)	Age
		M	SD	Range
6	18 (8)	76.3	3.9	72–83 (months)
7	12 (5)	91.3	4.4	85–95 (months)
8	27 (13)	101.6	3.5	96–107 (months)
9	23 (14)	112.3	3.5	108–119 (months)
10	19 (10)	125.3	3.1	120–130 (months)
11	10 (6)	136.4	3.4	132–142 (months)
Undergraduate	33 (12)	20.4	1.8	18–25 (years)