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 |