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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