Table 3.

Summary of random growth curve models

Estimate	Anxiety		Depression
	Coefficient	Z-score	Coefficient	Z-score
Physical Activity: Fixed Effects
Between	−0.04 ± 0.01	−4.26*	−0.08 ± 0.01	−8.51*
	[−0.06, −0.02]		[−0.10, −0.06]
Within	−0.01 ± 0.01	−1.94	−0.02 ± 0.01	−3.61*
	[−0.03, 0.00]		[−0.04, −0.01]
Quadratic	0.00±0.00	0.65	0.00 ± 0.00	2.23*
	[−0.00, 0.00]		[0.00, 0.00]
Mild	−0.03 ± 0.05	−0.59	−0.06 ± 0.05	−1.29
	[−0.12, 0.07]		[−0.15, 0.03]
Moderate	−0.14 ± 0.06	−2.24*	−0.33 ± 0.06	−5.48*
	[−0.26, −0.02]		[−0.45, −0.21]
Strenuous	−0.22 ± 0.09	−2.59*	−0.32 ± 0.08	−3.90*
	[−0.39, −0.05]		[−0.48, −0.16]
Model C Fit
Likelihood Ratio	χ2 [2] = 21.66*		χ2 [2] = 84.01*
−2LL	13905.04		13670.80

Note: ± Designates Standard Error; Values in brackets are 95% confidence intervals.

^*P < .05;