The Self-Efficacy for Diabetes (SED) scale,developed by Grossman, Brink, and Hauser(13), measures the self-perceptions or expectations of adolescents regarding their personal competence, power, and resourcefulness for successfully managing their diabetes.The scale focuses on youngsters'estimates of their own ability to cope with their illness and is based on Bandura's conception of self-efficacy (14). The scale consists of 35 items in three subscales:diabetes-specific self-efficacy (24 items); medical situation self-efficacy (5 items);and general situations (6 items). Subjects are asked to rate their degree of confidence for all items on a five-point scale ("very sure 1 can't" to "very sure I can"). Kuder-Richardson reliability coefficient a ranged from 0.90 to 0.92 for the total scale and the diabetes-specific subscale to 0.60 for the general.
situations subscale