December 27, 2010 at 3:56 pm

just a little correction since I look at these curves rather a lot–virtually every day. I am not sure about the website where Kelly got the info that the average height of a six year old is 42 inches, as that is the average height of a 4 year plus 7 or 8 months old boy (there are other curves for kids that are shorter like those with Down syndrome????). The average height of a just turned 6 year old boy is 45 1/4 inches and of an about to turn 7 year old boy is 48 inches. A 6 1/2 year boy has an average height of 46.5 inches as the second number Kelly quotes. 42 inches is at the 3% of a just turned six year old boy. Some sites list the 3% or 5% as one wants the height more than this and one worries a lot more about someone not growing than someone growing too much (like Jim and me!). I got this information from the American Academy of Pediatrics growth charts (now from the CDC) that all pediatricians use.

The average weight of just turned 6 year old boy is 44 pounds and the 5% is 38 pounds. For a seven year old boy 50% is 50 pounds and 5% is 40 pounds. For a 6 1/2 year old boy , the average is 47 pounds and 5% is 39 pounds.
WithHope for a cure of these diseases