Simplified field tables BMI-for-age BOYS Birth to 13 weeks (z-scores) Weeks
-3 SD
-2 SD
-1 SD
Median
1 SD
2 SD
3 SD
0
10.2
11.1
12.2
13.4
14.8
16.3
18.1
1
9.7
10.8
12.1
13.3
14.7
16.1
17.5
2
10.1
11.2
12.4
13.6
15.0
16.4
17.8
3
10.6
11.8
13.0
14.2
15.6
17.0
18.5
4
11.1
12.3
13.5
14.8
16.2
17.6
19.2
5
11.5
12.7
13.9
15.2
16.6
18.2
19.8
6
11.9
13.0
14.3
15.6
17.0
18.6
20.2
7
12.2
13.3
14.6
15.9
17.4
18.9
20.6
8
12.4
13.6
14.8
16.2
17.6
19.2
20.9
9
12.6
13.8
15.0
16.4
17.9
19.4
21.2
10
12.7
13.9
15.2
16.5
18.0
19.6
21.4
11
12.9
14.0
15.3
16.7
18.2
19.8
21.5
12
13.0
14.2
15.4
16.8
18.3
19.9
21.7
13
13.1
14.3
15.5
16.9
18.4
20.0
21.8
WHO Child Growth Standards