You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Ponderal index for a malnourished child is ____________ and explain in detail?
PI is calculated from measurements of body mass (M) and height (H). PI = the cube root of body weight divided by height, where body mass is in kilograms and height in meters. Be aware that there are variations of this formula which are also sometimes called the Ponderal Index. Ref.nelson 20th edition page 339 nutrition chapter