Although the results of this study demonstrate good NAH outcomes in children with short stature or growth failure who initiated GH treatment at an older age, the negative correlations of ATS with near-adult HSDS when analyzed by sex indicate that earlier recognition and referral for growth failure or short stature, and efforts to start GH treatment at a younger age, would most likely have resulted in greater gains in height and an increase in adult HSDS. Here, GH1 is linked to Growth delay.