Age (years) | Boys | Girls | |||||
---|---|---|---|---|---|---|---|
n | Mean | SD | n | Mean | SD | ||
0 | 154 | 50.0 | 2.7 | 142 | 49.6 | 2.4 | |
1 | 139 | 74.0 | 2.6 | 128 | 73.4 | 2.7 | |
2 | 133 | 84.2 | 3.0 | 117 | 83.7 | 3.0 | |
3 | 135 | 92.5 | 3.2 | 110 | 92.5 | 3.6 | |
4 | 117 | 99.5 | 3.8 | 110 | 99.7 | 3.9 | |
5 | 122 | 105.8 | 4.2 | 112 | 106.3 | 4.5 | |
6 | 122 | 111.8 | 4.6 | 107 | 112.1 | 4.8 | |
7 | 115 | 117.1 | 5.0 | 110 | 117.9 | 5.0 | |
8 | 114 | 122.4 | 5.2 | 105 | 123.2 | 5.1 | |
9 | 110 | 126.8 | 5.6 | 103 | 128.1 | 5.4 | |
10 | 104 | 131.3 | 5.8 | 101 | 132.7 | 5.8 | |
11 | 106 | 136.5 | 6.2 | 96 | 137.3 | 6.5 | |
12 | 103 | 140.2 | 6.4 | 99 | 142.3 | 7.2 | |
13 | 102 | 144.5 | 6.8 | 93 | 147.9 | 8.1 | |
14 | 94 | 149.6 | 7.7 | 86 | 153.2 | 8.0 | |
15 | 78 | 154.8 | 9.0 | 65 | 158.2 | 6.6 | |
16 | 67 | 160.0 | 10.3 | 58 | 162.5 | 6.4 | |
17 | 53 | 165.7 | 10.2 | 47 | 164.3 | 6.7 | |
18 | 41 | 169.2 | 8.7 | 40 | 165.0 | 7.3 | |
19 | 32 | 171.1 | 7.5 | 27 | 165.0 | 6.3 |