Introduction: Continuous subcutaneous insulin infusion (CSII) is a form of insulin administration for patients with type I diabetes mellitus (T1DM) that was introduced as a means of stimulating normal plasma insulin fluctuations and provide better metabolic control that is better than multiple daily insulin injections (MDI). The purpose of this study was to determine the effect of CSII as compared to MDI in the treatment of T1DM in children and adolescent below 20 years of age.