Fig. 2

Category response functioning analyses were performed by ordering scales such that if responses to the individual items were summed, higher scores would indicate greater comfort in managing (Questions 1–9) or lower perceived barriers to (Questions 14–19) inpatient glycemic control. Analyses of pilot study (phase 2) data with initial 5-choice answer scale demonstrated notable threshold disorder with little discrimination. Panel a demonstrates thresholds for Questions 1–9 and Panel b demonstrates thresholds for Questions 14–19