Reference curves of birth weight, length, and head circumference for gestational ages in Yogyakarta, Indonesia

BMC Pediatrics

Table 5 Head circumference of boys’ and girls’ by gestational age in weeks

GA (w)	No of cases	Mean (cm)	SD	Head Circumferences Percentiles (cm)
GA (w)	No of cases	Mean (cm)	SD	P3	P5	P10	P25	P50	P75	P90	P95	P97
Boys
26	50	26.7	2.79	22	22	23	24	26	30	30	30	30
27	33	25.9	2.48	23	23	23	24	25	28	30	31	31
28	42	27.8	3.19	23	23	24	25	27	30	33	33	33
29	35	29.0	2.83	24	25	26	27	28	32	33	33	33
30	63	28.6	1.89	25	25	26	27	29	30	31	31	31
31	89	29.2	1.80	25	26	27	28	29	31	31	32	32
32	223	31.3	1.40	27	28	30	31	32	32	32	33	33
33	256	30.4	1.86	26	27	28	30	31	32	32	33	34
34	398	31.0	1.42	28	29	29	30	31	32	33	34	34
35	465	31.2	1.19	29	29	30	31	31	32	33	33	34
36	868	32.6	1.09	30	31	32	32	33	34	34	34	34
37	669	32.7	1.18	30	30	31	32	33	34	34	34	35
38	3534	33.3	0.871	32	32	32	33	34	34	34	35	35
39	6296	33.7	0.778	32	32	33	34	34	34	35	35	35
40	7871	33.9	0.751	32	32	33	34	34	34	35	35	35
41	3463	34.2	0.763	32	33	34	34	34	35	35	36	36
42	1289	34.1	0.809	32	33	33	34	34	35	35	36	36
Girls
26	36	26.6	2.81	22	22	23	24	26	30	30	30	30
27	31	27.0	2.53	23	24	24	25	26	30	30	30	30
28	46	27.4	3.16	22	23	24	25	27	30	32	33	33
29	31	29.5	2.36	25	26	26	28	30	31	33	33	33
30	41	28.4	2.30	23	23	24	27	29	30	31	31	31
31	74	29.3	1.75	25	26	27	28	30	31	31	32	32
32	171	31.1	1.53	27	28	29	30	32	32	33	33	33
33	207	30.3	1.75	27	27	28	29	30	32	32	33	33
34	342	30.8	1.32	28	28	29	30	31	32	32	33	33
35	452	31.2	1.32	28	29	30	31	31	32	33	33	34
36	812	32.4	1.23	30	30	31	32	32	33	34	34	34
37	608	32.7	1.26	30	30	31	32	33	34	34	34	35
38	3088	33.2	0.848	31	32	32	33	34	34	34	34	35
39	5544	33.6	0.774	32	32	33	34	34	34	35	35	35
40	6817	33.8	0.752	32	32	33	34	34	34	35	35	35
41	2964	34.1	0.778	32	33	33	34	34	35	35	35	36
42	1201	34.0	0.835	32	32	33	34	34	35	35	35	36

ISSN: 1471-2431