Supplementary Material for: Growth hormone therapy: Comparison of short- and long-term outcomes between children with Growth Hormone Deficiency and Small for Gestational Age

Introduction Direct comparisons of both short-term and long-term auxological outcome of growth hormone therapy (GHT) between growth hormone deficiency (GHD) and small for gestational age (SGA) are scarce. Methods 103 patients with GHD and 53 patients with SGA treated at our tertiary center were investigated. Short-term and long-term outcomes were compared between these groups using multi-variable linear regression models with adjustment for age, sex and height at therapy start, also allowing for sex-specific group comparisons. Results Mean delta height standard deviation scores (SDS) after 1 year of treatment was significantly higher in GHD (0.90, CI 0.82 to 0.99) compared to SGA (0.67, C I 0.54 to 0.79)(p= 0.003) with no sex difference. As expected, the mean increase in height SDS at final height (FH) was significantly higher in GHD (2.21, CI 2.00 to 2.42) compared to SGA (1.05, CI 0.75 to 1.35)(p