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

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

GA (w) No of cases Mean (cm) SD Head Circumferences Percentiles (cm)
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
  1. GA Gestational Age; SD Standard Deviation; P Percentiles; cm centimeter; w week