Table 3.

Test results for multi-level regression models.

	Regression Model
	Age: 1 and 2	Age: 3, 4, 5, 6, and 7
IN-SAMPLE TEST
R2	0.774	0.736
Adjusted R2	0.758	0.728
p-value	<2.2E-16	<2.2E-16
OUT-OF-SAMPLE TEST
R2	0.748	0.753