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How Accurate is AHP?

 Some children have more mature bone development for their age (“early bloomers”) and some children have less mature bone development for their age (“late bloomers”), and some are roughly in line with their chronological age (“average bloomers”). 

A 14 year-old boy, currently 5’ 8”, with a predicted adult height from AHP’s hand X-ray model of 6’ 1” tall, with an average bone age of 14 years-old, would have a predicted range of 6’ on the low side to 6’ 2” on the high side, as indicated from the table below (68% Confidence of +/- 1.05”).