Table 2. Solution for fixed effect of height gain and growth rate by age period, sex, and their interaction.

	Height gain			Growth rate
	Estimate	SE	P value	Estimate	SE	P value
Intercept	5.88	0.03	<0.0001	5.07	0.03	<0.0001
7.5–8.5 y	−0.24	0.05	<0.0001	−0.44	0.04	<0.0001
8.5–9.5 y	−0.62	0.07	<0.0001	−0.94	0.05	<0.0001
9.5–10.5 y	−0.59	0.07	<0.0001	−1.09	0.05	<0.0001
10.5–11.5 y	0.16	0.07	0.02	−0.71	0.05	<0.0001
11.5–12.5 y	1.51	0.09	<0.0001	0.04	0.06	0.48
12.5–13.5 y	1.13	0.10	<0.0001	−0.41	0.07	<0.0001
13.5–14.5 y	−0.12	0.10	0.24	−1.36	0.07	<0.0001
Girls	−0.002	0.04	0.96	0.02	0.04	0.57
7.5–8.5 y × girls	0.22	0.08	0.004	0.18	0.06	0.007
8.5–9.5 y × girls	0.81	0.10	<0.0001	0.62	0.08	<0.0001
9.5–10.5 y × girls	1.39	0.09	<0.0001	1.01	0.07	<0.0001
10.5–11.5 y × girls	0.66	0.11	<0.0001	0.43	0.08	<0.0001
11.5–12.5 y × girls	−2.20	0.12	<0.0001	−1.56	0.09	<0.0001
12.5–13.5 y × girls	−4.13	0.15	<0.0001	−2.77	0.10	<0.0001
13.5–14.5 y × girls	−4.23	0.15	<0.0001	−2.74	0.11	<0.0001

Abbreviation: SE, standard error.