PMC36 SIX SIGMA AND LEAN INTEGRATED METHODOLOGIES IN HEALTH CARE TO IMPROVE PATIENT QUALITY OF LIFE

2.0) and person reliability of 0.72 and 0.61, respectively. Analysis results suggested that the 14 items targeted well on the prescribers’ DDI knowledge levels. Nevertheless, prescribers with little DDI knowledge were targeted by three items that were equally difficult, and these items were too difficult for some prescribers. Among the usefulness questions, the statement regarding the future usefulness was most easily to endorse, whereas the statement regarding how often the information was new to the prescriber was most difficult to endorse. A multiple regression analysis revealed that prescribers’ DDI knowledge score was associated with being a specialist and having previously seen a DDI-caused harm. Another significant predictor was the extent to which the risk of DDIs affected prescribers’ drug selection. CONCLUSION: IRT analysis indicated that the two scales developed have acceptable reliability and fit statistics. Refinements such as adding easy items to the DDI knowledge test and continuing evaluation are needed in future application of the scales.