Figure 4

Age at original childhood diagnosis of GH deficiency. Distribution of age at original diagnosis for patients who retested as GH deficient (left) vs. those who retested as GH sufficient (right). Within the persistently GH-deficient group, patients with history of idiopathic GH deficiency were significantly younger at diagnosis than those with history of organic GH deficiency (Table 1). Horizontal lines represent mean ages at initial diagnosis for patients with history of IGHD. GH = growth hormone; N = total number of patients in each category (organic vs. idiopathic).