Taken from a Times online article, May 28, 2004:
CALCULATE YOUR CHILD'S BMI
* Divide the weight by the height squared to find out your child's Body Mass Index.
Plot this information on a BMI chart, available from your GP, health visitor or school nurse, and keep track of your child's development. Repeat this process every six months. For further information, consult the Child Growth Foundation's website: www.health-for-all-children.co.uk*Body Mass Index