Table 3.

Mean z-scores for children examined at age 0–4 years in 1978 and in 1979

	Weight-for-age z-score		Length/height-for-age z-score		Weight-for-length/height z-score*
Age in months	1978	1979	1978	1979	1978	1979
0–5	−0.50 [134]	−0.44 [126]	−0.61 [134]	−0.80 [122]	0.02 [134]	0.37 [121]
6–11	−0.60 [111]	−0.71 [134]	−0.63 [111]	−0.80 [133]	−0.28 [111]	−0.32 [133]
12–36	−0.85 [436]	−1.06 [426]	−1.37 [433]	−1.49 [425]	−0.18 [431]	−0.39 [425]
36–60	−0.81 [365]	−1.00 [341]	−1.41 [363]	−1.41 [340]	0.04 [359]	−0.25 [339]
All ages	−0.76 (1.03)	−0.92 (1.03)	−1.21 (1.23)	−1.29 (1.22)	−0.09 (1.03)	−0.24 (1.06)
z-score difference†	−0.19 (−0.25, −0.14)		−0.14 (−0.20, −0.07)		−0.16 (−0.23, −0.10)

[ ] is the number of children with a specific z-score in the age group; () is the SD for the z-scores.

*The WHO z-scores are based on measuring length for children under 2 years of age and height for children aged 2 years and older.

†From a random intercept model.