Table 1.

Clinical characteristics of the 82 patients included in this study. All patients had received a clinical diagnosis of HH from their referring clinician, with biochemical testing undertaken in their local laboratories. When applicable, median values are given with the range

Reported consanguineous	18%
Sex (% male)	48%
Birth weight kg (gestation)	3.5 (39 wk) [2.0‐5.2 (35‐41 wk)]
Current age (y)	6.5 [1‐35]
Age at diagnosis of HH (wk)	4 [0‐48]
Blood glucose at diagnosis (mmol/L)	1.9 [<1‐2.8]
Insulin at time of hypoglycaemia (pmol/L)	96 [15‐365]
C‐peptide at diagnosis (pmol/L)	775 [150‐2400]
Extra‐pancreatic features	n = 15