TABLE 4.

Fixed effects from multilevel models for change for WAZ, LAZ, and WLZ in intervention and historical control groups

	WAZ						LAZ						WLZ
	Unadjusted			Adjusted1			Unadjusted			Adjusted1			Unadjusted			Adjusted1
	β	SE	P value	β	SE	P value	β	SE	P value	β	SE	P value	β	SE	P value	β	SE	P value
Intercept	−0.705	0.208	0.001	−3.42	0.44	<0.001	−0.806	0.246	0.001	−3.51	0.51	<0.001	0.120	0.250	0.63	−1.33	0.48	0.006
Age, mo	0.009	0.017	0.61	−0.005	0.017	0.79	0.010	0.021	0.63	0.004	0.024	0.87	−0.041	0.024	0.08	−0.051	0.024	0.038
Group
Historical control	0.333	0.248	0.18	0.131	0.235	0.58	0.890	0.299	0.003	0.716	0.322	0.028	−0.181	0.305	0.55	−0.264	0.332	0.43
Intervention2	—	—		—	—		—	—		—	—		—	—		—	—
Group x age	−0.047	0.021	0.027	−0.050	0.021	0.02	−0.092	0.026	<0.001	−0.096	0.030	0.001	0.004	0.029	0.90	−0.002	0.030	0.95
Birth weight, kg				1.13	0.14	<0.001				1.07	0.15	<0.001				0.637	0.138	<0.001
Mother‘s level of education
<Secondary school				−0.503	0.139	<0.001				−0.373	0.153	0.016				−0.381	0.141	0.007
≥Secondary school2				—	—					—	—					—	—

¹Adjusted for birth weight and level of maternal education. LAZ, length-for-age Z-score; WAZ, weight-for-age Z-score; WLZ, weight-for-length Z-score.

²Reference category.