. Author manuscript; available in PMC: 2010 Nov 30.

Published in final edited form as: Br J Psychiatry. 2007 Dec;191:512–520. doi: 10.1192/bjp.bp.106.034694

Table 2. Estimated fixed effects assessing the basic growth model.

	Basic growth model

	B	95% Cl	P
Early life (birth to 2½ years)
Entire sample (n=7780)
Mean height at birth, cm (intercept)	52.06	52.01 to 52.11	<0.001
Linear change in height, cm/year	30.27	30.12 to 30.37	< 0.001
Quadratic change in height, cm/year²	−6.69	−6.73 to −6.64	< 0.001
Females only (n=3802)
Mean height at birth, cm (intercept)	51.64	51.57 to 51.72	< 0.001
Linear change in height, cm/year²	29.53	29.39 to 29.67	< 0.001
Quadratic change in height, cm/year²	−6.37	−6.44 to −6.30	< 0.001
Males only (n=3978)
Mean height at birth, cm (intercept)	52.46	52.39 to 52.54	< 0.001
Linear change in height, cm/year	30.95	30.80 to −31.10	< 0.001
Quadratic change in height, cm/year²	−6.98	−7.04 to −6.91	< 0.001
Later childhood (2½−9 years)
Entire sample (n=7353)
Mean height at age 2½ years, cm (intercept)	90.51	90.42 to 90.61	< 0.001
Linear change in height, cm/year	7.97	7.92 to 8.02	< 0.001
Quadratic change in height, cm/year²	−0.22	−0.23 to −0.22	< 0.001