has essential measure Gender Current Age Quality of Life Measure Sickle Cell Disease Self-Efficacy Scale Suggest update to label Scale of Self-efficacy in Sickle Cell Disease PhenX protocol: Self-efficacy in Sickle Cell Disease #820401 Clinic Patients (Adults with SCD) Self-efficacy, or one’s perceptions that they can exercise control over their behaviors and environment, may play an important role in determining the ability to adjust to chronic conditions such as sickle cell disease (SCD). A nine-item self-administered questionnaire that measures disease-specific perceptions of the ability to manage day-to-day issues resulting from sickle cell disease (SCD). Items are scores according to a five-point scale ranging from 1 - Not sure at all to 5 - Very sure. Responses from individual items are summed to give an overall score with higher scores indicating greater self-efficacy. Self 18 and older Suggest update to label in PhenX as we have done. Quality of Life and Care Diagnostic Instrument