Table 1: Compatibility of ages and time of evaluation between the 3 groups (ANOVA).

Variables (Years)	Group 1 MPA (n=24)	Group 2 Jasper Jumper (n=25)	Control Group (n=22)	P
	Mean(S.D)	Mean(S.D)	Mean(S.D)
Initial Age	12.36(1.75)	12.72(1.20)	12.67(0.75)	0.606
Final Age	15.10(1.50)	14.87(1.20)	14.79(1.70)	0.869
Evaluation time	2.74(0.70)	2.15(0.29)	2.12(1.63)	0.065