Table 3 Summary statistics for head circumference at birth by gestational age (GA) (weeks) based on raw data and adjusted data from the total population, and on the selected sample, Sweden, 1990–1999. Note: GA = 24 corresponds to 24 weeks+0 days etc as in the graphs.
From: Continuous growth reference from 24thweek of gestation to 24 months by gender
Total | Adjusted | Delta = 1.0 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
GA | Mean | SD | SKEW | KURT | Mean | SD | SKEW | KURT | Mean | SD | SKEW | KURT |
Boys | ||||||||||||
24 | 22.25 | 0.93 | -0.24 | 0.19 | -0.75 | 0.91 | -0.36 | 0.10 | -0.75 | 0.82 | 0.08 | -0.46 |
25 | 23.26 | 1.34 | 0.71 | 0.64 | -0.82 | 1.29 | 0.89 | 0.60 | -1.02 | 1.12 | 0.54 | 0.27 |
26 | 24.58 | 1.35 | -0.01 | -0.22 | -0.67 | 1.32 | 0.06 | -0.25 | -0.70 | 1.39 | 0.07 | -0.37 |
24–26 | 23.72 | 1.57 | 0.26 | -0.43 | -0.73 | 1.24 | 0.32 | 0.07 | -0.79 | 1.21 | 0.20 | -0.17 |
27 | 26.05 | 2.49 | 1.89 | 5.38 | -0.17 | 2.46 | 2.06 | 6.33 | -0.52 | 1.59 | 0.17 | 0.27 |
28 | 26.71 | 1.72 | 1.26 | 4.74 | -0.52 | 1.70 | 1.57 | 5.87 | -0.67 | 1.19 | -0.12 | 0.06 |
29 | 27.85 | 2.04 | 1.27 | 3.53 | -0.35 | 2.04 | 1.30 | 3.44 | -0.53 | 1.55 | 0.16 | -0.24 |
27–29 | 26.94 | 2.23 | 1.22 | 3.37 | -0.35 | 2.08 | 1.79 | 6.02 | -0.57 | 1.42 | 0.09 | -0.06 |
30 | 28.84 | 1.98 | 0.76 | 2.93 | -0.29 | 1.95 | 0.86 | 3.24 | -0.37 | 1.64 | -0.20 | 0.04 |
31 | 29.57 | 1.73 | 0.21 | 2.99 | -0.42 | 1.72 | 0.21 | 2.90 | -0.40 | 1.45 | -0.07 | 0.34 |
32 | 30.58 | 1.61 | 0.59 | 2.83 | -0.22 | 1.58 | 0.66 | 3.10 | -0.26 | 1.43 | 0.17 | 0.18 |
33 | 31.51 | 1.50 | -0.02 | 1.15 | -0.08 | 1.47 | 0.03 | 1.25 | -0.10 | 1.45 | 0.00 | 0.24 |
34 | 32.29 | 1.55 | -0.04 | 1.72 | -0.04 | 1.53 | -0.06 | 1.65 | -0.04 | 1.44 | -0.06 | 0.10 |
35 | 32.97 | 1.49 | -0.04 | 0.38 | -0.07 | 1.47 | -0.04 | 0.42 | -0.06 | 1.43 | 0.00 | -0.25 |
36 | 33.57 | 1.45 | -0.01 | 0.31 | -0.14 | 1.44 | -0.01 | 0.29 | -0.13 | 1.45 | -0.03 | 0.27 |
37 | 34.07 | 1.40 | 0.03 | 0.43 | -0.28 | 1.40 | 0.03 | 0.43 | -0.30 | 1.35 | -0.04 | -0.09 |
38 | 34.51 | 1.36 | 0.03 | 0.22 | -0.45 | 1.36 | 0.04 | 0.24 | -0.45 | 1.37 | 0.05 | 0.41 |
39 | 34.89 | 1.32 | -0.03 | 0.31 | -0.62 | 1.32 | -0.02 | 0.32 | -0.61 | 1.31 | 0.08 | -0.12 |
40 | 35.32 | 1.32 | -0.03 | 0.24 | -0.71 | 1.32 | -0.04 | 0.25 | -0.72 | 1.31 | -0.20 | 0.21 |
41 | 35.71 | 1.35 | -0.07 | 0.25 | -0.83 | 1.35 | -0.07 | 0.26 | -0.81 | 1.34 | 0.07 | 0.31 |
42 | 36.05 | 1.36 | -0.11 | 0.36 | -0.91 | 1.35 | -0.10 | 0.35 | -0.90 | 1.36 | 0.08 | -0.14 |
Girls | ||||||||||||
24 | 22.74 | 3.43 | 2.74 | 8.08 | -0.47 | 3.58 | 2.74 | 8.08 | -1.44 | 1.58 | 0.63 | 1.70 |
25 | 24.03 | 3.53 | 2.42 | 5.46 | -0.12 | 3.57 | 2.45 | 5.59 | -1.21 | 1.36 | 1.08 | 2.06 |
26 | 24.90 | 3.93 | 5.48 | 34.79 | -0.35 | 3.88 | 5.50 | 34.89 | -1.02 | 1.18 | 0.35 | 0.73 |
24–26 | 24.12 | 3.77 | 3.87 | 21.55 | -0.31 | 3.69 | 4.04 | 20.90 | -1.14 | 1.34 | 0.57 | 1.01 |
27 | 25.49 | 2.88 | 2.36 | 6.35 | -0.63 | 2.86 | 2.42 | 6.63 | -1.14 | 1.53 | -0.08 | -0.08 |
28 | 25.97 | 1.59 | 0.57 | 1.05 | -1.14 | 1.53 | 0.47 | 0.87 | -1.22 | 1.50 | 0.08 | -0.03 |
29 | 27.46 | 1.83 | 1.18 | 3.11 | -0.58 | 1.79 | 1.31 | 3.68 | -0.74 | 1.52 | 0.04 | 0.23 |
27–29 | 26.50 | 2.25 | 1.26 | 3.53 | -0.77 | 2.05 | 2.11 | 8.16 | -0.97 | 1.52 | 0.07 | 0.02 |
30 | 28.39 | 1.98 | 0.95 | 2.27 | -0.40 | 1.96 | 1.03 | 2.62 | -0.56 | 1.37 | -0.47 | 0.29 |
31 | 29.28 | 1.73 | 0.60 | 2.01 | -0.33 | 1.71 | 0.60 | 2.27 | -0.43 | 1.41 | -0.08 | 0.13 |
32 | 30.10 | 1.63 | 0.07 | 0.92 | -0.30 | 1.62 | 0.06 | 0.81 | -0.30 | 1.51 | -0.10 | 0.41 |
33 | 30.91 | 1.58 | 0.46 | 2.29 | -0.20 | 1.57 | 0.47 | 2.32 | -0.24 | 1.36 | 0.08 | 0.04 |
34 | 31.87 | 1.56 | 0.14 | 0.98 | 0.08 | 1.54 | 0.15 | 1.06 | 0.08 | 1.39 | 0.01 | -0.02 |
35 | 32.55 | 1.48 | 0.20 | 0.87 | 0.09 | 1.46 | 0.21 | 0.92 | 0.09 | 1.42 | 0.00 | 0.32 |
36 | 33.09 | 1.40 | 0.05 | 0.46 | 0.01 | 1.40 | 0.05 | 0.42 | 0.00 | 1.36 | -0.12 | -0.14 |
37 | 33.54 | 1.36 | 0.05 | 0.32 | -0.14 | 1.35 | 0.06 | 0.31 | -0.14 | 1.35 | 0.02 | 0.39 |
38 | 33.94 | 1.32 | 0.07 | 0.31 | -0.30 | 1.32 | 0.08 | 0.31 | -0.31 | 1.31 | 0.05 | -0.06 |
39 | 34.28 | 1.27 | 0.04 | 0.33 | -0.49 | 1.26 | 0.05 | 0.33 | -0.51 | 1.23 | -0.23 | 0.08 |
40 | 34.68 | 1.26 | 0.02 | 0.25 | -0.58 | 1.26 | 0.01 | 0.27 | -0.57 | 1.24 | 0.27 | 0.14 |
41 | 35.04 | 1.28 | -0.01 | 0.27 | -0.69 | 1.28 | -0.02 | 0.27 | -0.69 | 1.31 | -0.04 | -0.11 |
42 | 35.32 | 1.30 | -0.04 | 0.10 | -0.79 | 1.29 | -0.03 | 0.16 | -0.83 | 1.33 | -0.38 | 0.07 |