Interpretation of Z-scores for growth parameters

BMI: body mass index; IMCI: Integrated Management of Childhood Illness.

* Length (recumbent) is generally measured for children younger than 2 years of age, and height (standing) is measured for those 2 years and older.

¶ A child in this range is very tall. Tallness is rarely a problem, unless it is so excessive that it may indicate an endocrine disorder such as a growth hormone-producing tumor. Refer a child in this range for assessment if you suspect an endocrine disorder (eg, if parents of normal height have a child who is excessively tall for their age).

Δ A child whose weight-for-age falls into this range may have a growth problem, but this is better assessed from a weight-for-length/height or BMI-for-age.

◊ A plotted point above 1 shows possible risk. A trend towards the 2 Z-score line shows definite risk.

§ It is possible for a stunted or severely stunted child to become overweight.