Table 3.

Parameter estimates of multiple-group analysis of longitudinal height data for Ethiopia, India, Peru and Vietnam

Group	Parameter	Estimate	SE	CR	p-value
Ethiopia	Intercept ($\alpha$)	71.376	0.136	524.896	***
	Rate of change ($\beta$)	6.105	0.013	465.808	***
	Random intercept variance (${\psi }_{\alpha \alpha }$)	12.569	0.938	13.397	***
	Random slope variance (${\psi }_{\beta \beta }$)	0.112	0.01	10.944	***
	Covariance (${\psi }_{\alpha \beta }$)	0.061	0.08	0.762	0.446
India	Intercept ($\alpha$)	72.15	0.122	590.749	***
	Rate of change ($\beta$)	5.984	0.013	463.608	***
	Random intercept variance (${\psi }_{\alpha \alpha }$)	12.663	0.748	16.936	***
	Random slope variance (${\psi }_{\beta \beta }$)	0.087	0.009	9.349	***
	Covariance (${\psi }_{\alpha \beta }$)	0.116	0.067	1.732	0.083
Peru	Intercept ($\alpha$)	71.768	0.12	597.644	***
	Rate of change ($\beta$)	6.129	0.012	528.918	***
	Random intercept variance (${\psi }_{\alpha \alpha }$)	12.945	0.799	16.194	***
	Random slope variance (${\psi }_{\beta \beta }$)	0.051	0.008	6.386	***
	Covariance (${\psi }_{\alpha \beta }$)	0.463	0.063	7.418	***
Vietnam	Intercept ($\alpha$)	72.399	0.108	669.674	***
	Rate of change ($\beta$)	6.192	0.011	542.145	***
	Random intercept variance (${\psi }_{\alpha \alpha }$)	13.341	0.624	21.386	***
	Random slope variance (${\psi }_{\beta \beta }$)	0.077	0.007	10.554	***
	Covariance (${\psi }_{\alpha \beta }$)	0.51	0.052	9.78	***

^***p < 0.0001