Table 6.

Standardized coefficients for initial model and adjusted latent growth models

Models	Parameters	Standardized coefficients	Standard error	P value	Goodness-of-fit indices
Initial model	Intercept	2.206	0.466	<  0.001	χ2(7) = 145.588, P <  0.001, CFI = 0.679, TLI = 0.584, SRMR = 0.066; RMSEA = 0.033 (0.025, 0.041)
	Slope	1.449	0.431	0.001
	PA12	−0.200	0.05	<  0.001
	PA18	−0.024	0.027	0.379
	PA24	0.103	0.025	<  0.001
	PA36	0.105	0.019	<  0.001
	PA42	0.102	0.025	<  0.001
	PA48	0.042	0.022	0.05
	PA54	−0.020	0.038	0.6
	PA60	0.012	0.029	0.667
Adjusted modelsa	Intercept	4.405	1.688	0.009	χ2(7) = 256.470, P <  0.001, CFI = 0.679, TLI = 0.617, SRMR = 0.039; RMSEA = 0.023 (0.017, 0.029)
	Slope	3.848	1.608	0.017
	PA12	−0.120	0.029	< 0.001
	PA18	0.013	0.020	0.505
	PA24	0.137	0.020	< 0.001
	PA36	0.118	0.018	< 0.001
	PA42	0.123	0.022	< 0.001
	PA48	0.051	0.019	0.009
	PA54	−0.001	0.030	0.967
	PA60	0.014	0.025	0.579

Abbreviations: CFI Comparative fit index, PA Outdoor activity time, RMSEA Root mean square error of approximation, SRMR Standardized root mean square residual, ST Screen time, TLI Tucker-Lewis index

^aAdjusted for age, family member number, family income, pregnancy computer use, pregnancy phone use, pregnancy depression symptom, maternal age, maternal educational level, maternal occupation, maternal race, paternal age, paternal educational level, paternal occupation, paternal race