Table 5

Height for age and weight for age centile values expressed as Z scores using NCHS standards

Age (years)Boys Girls
3rd 10th50th 90th97th 3rd10th 50th90th 97th
Height for age
0−2.5–1.7−0.21.11.6−2.2−1.40.0 1.2 1.8
3−2.3−1.8−0.60.51.0−2.2−1.6−0.40.8 1.3
6−2.7−2.1−0.90.30.8−2.4−1.8−0.50.7 1.3
9−2.8−2.2−0.90.30.9−2.3−1.7−0.70.4 1.0
12−2.9−2.4−1.3−0.10.4−3.3−2.7−1.40.0 0.6
15−3.7−3.0−1.7−0.40.2−2.5−1.9−0.50.9 1.6
18−4.1−3.1−1.20.61.4−1.9−1.20.2 1.7 2.4
Weight for age
0−2.7−1.9−0.21.11.7−2.1−1.4−0.11.6 2.5
3−2.5−2.1−1.00.10.5−2.9−2.3−1.00.2 0.6
6−2.8−2.3−1.3−0.10.3−2.4−2.0−1.00.1 0.5
9−2.6−2.2−1.3−0.30.2−2.2−2.0−1.3−0.40.0
12−2.7−2.4−1.7−0.7−0.2−2.5−2.3−1.7−0.8−0.2
15−3.5−3.2−2.2−0.9−0.1−2.9−2.5−1.4−0.30.2
18−4.3−3.5−2.0−0.9−0.4−2.4−1.9−0.80.1 0.4
  • NCHS, National Center for Health Statistics.