International birth length centiles

	Boys						Girls
	Number of observations	Centiles for length (cm)					Number of observations	Centiles for length (cm)
	Number of observations	3^rd	10^th	50^th	90^th	97^th	Number of observations	3^rd	10^th	50^th	90^th	97^th
33 weeks	33	39.69	41.09	43.81	46.55	47.97	17	39.79	41.01	43.39	45.70	46.85
34 weeks	48	41.05	42.38	44.98	47.59	48.94	65	41.04	42.22	44.55	46.79	47.92
35 weeks	128	42.26	43.54	46.03	48.53	49.82	111	42.14	43.30	45.57	47.76	48.86
36 weeks	320	43.36	44.58	46.97	49.38	50.62	292	43.13	44.26	46.48	48.62	49.69
37 weeks	849	44.34	45.52	47.82	50.14	51.34	799	44.01	45.11	47.29	49.39	50.44
38 weeks	2031	45.22	46.37	48.59	50.83	51.99	1786	44.79	45.88	48.01	50.07	51.10
39 weeks	2983	46.02	47.13	49.29	51.46	52.59	2846	45.49	46.56	48.65	50.68	51.69
40 weeks	2531	46.75	47.83	49.92	52.03	53.13	2486	46.12	47.17	49.23	51.23	52.22
41 weeks	1146	47.41	48.46	50.50	52.56	53.62	1180	46.68	47.72	49.75	51.72	52.70
42 weeks	202	48.01	49.04	51.03	53.03	54.07	218	47.19	48.21	50.22	52.15	53.12
Total	10,271	–	–	–	–	–	9800	–	–	–	–	–

International standards for newborn length by gestational age and sex from the Newborn Cross-Sectional Study of the INTERGROWTH-21^st Project. The table shows smoothed centiles for birth length of boys and girls according to gestational age.

cm: centimeter.

Reproduced from: Villar J, Cheikh Ismail L, Victora CG, et al. International standards for newborn weight, length, and head circumference by gestational age and sex: the Newborn Cross-Sectional Study of the INTERGROWTH-21st Project. Lancet 2014; 384:857. Table used with the permission of Elsevier Inc. All rights reserved.

Graphic 107270 Version 1.0

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International birth length centiles