Table 1.

Characteristics of the participants by year and gender at the baseline.

	N	%
Age (N = 15)
11 years	4	26.7
12 years	3	20.0
13 years	8	53.3
Total	15	100.0
MS ± SD (years)	12.3 ± 0.9
Gender (N = 15)
Boy (male)	7	46.7
Girl (female)	8	53.3
Total	15	100.0

MS ± SD—mean score ± standard deviation.