Table 2.

Weight and length/height at birth and weight and length/height velocities from 3 months to 5 years from multilevel spline models for weight and length/height with age.

	Girls (N=5050)		Boys (N=5444)
	Mean (SD)	95% reference range	Mean (SD)	95% reference range
Birth weight (kg)	3.33 (1.01)	1.48, 5.48	3.42 (1.00)	1.55, 5.46
0–3 month velocity (kg/year)	10.80 (0.99)	8.99, 12.94	11.89 (0.98)	10.17, 13.99
3–12 month velocity (kg/year)	6.10 (1.00)	4.26, 8.25	6.10 (1.00)	4.29, 8.28
12–34 month velocity (kg/year)	1.90 (1.05)	0.04, 4.34	1.90 (1.04)	0.06, 4.25
34–60 month velocity (kg/year)	2.11 (1.02)	0.30, 4.51	2.09 (1.01)	0.35, 4.39
Birthlength (cm)	51.42 (1.01)	49.62, 53.70	52.03 (1.00)	50.32, 54.18
0–3 month velocity (cm/year)	36.19 (0.99)	34.28, 38.17	38.57 (0.99)	36.59, 40.56
3–12 month velocity (cm/year)	20.51 (1.01)	18.53, 22.49	20.38 (1.01)	18.31, 22.28
12–34 month velocity (cm/year)	9.70 (1.04)	7.46, 11.86	9.70 (1.04)	7.50, 11.87
34–60 month velocity (cm/year)	7.40 (1.02)	5.27, 9.77	7.40 (1.02)	5.28, 9.48