• A two-step patient scheduling procedure

      Samudra, Michael; Demeulemeester, Erik; Cardoen, Brecht (2013)
    • Due time driven patient scheduling

      Samudra, Michael; Demeulemeester, Erik; Cardoen, Brecht (2012)
      The purpose of the study was to examine the psychometric properties of the Coach-Athlete Relationship Questionnaire (CART-Q), an instrument that was originally developed and validated for British athletes (Jowett & Ntoumanis, 2004), with a sample of Belgian, Dutch speaking athletes. The CART-Q was designed to measure Closeness, Commitment, and Complementarity (3Cs). Study 1 focused on assessing the factorial validity of the 11-item CART-Q with a sample of 401 Belgian, Dutch speaking athletes employing Confirmatory Factory Analysis (CFA). Analysis pointed to a three-dimensional factor structure with satisfactory internal consistency scores. Study 2 cross-validated the factorial structure of the 11- item CART-Q with an independent sample of 400 Belgian, Dutch speaking athletes and examined its predictive validity. The three-dimensional factor structure was upheld with satisfactory internal consistency scores. The predictive validity of the Belgian CART-Q was demonstrated when the 3Cs of the CART-Q were associated with satisfaction variables in a conceptually coherent manner. Overall, results supported the multidimensional nature of the coach-athlete relationship with Belgian athletes, as reflected in the 3Cs.
    • How to schedule patients within their due time

      Samudra, Michael; Cardoen, Brecht; Demeulemeester, Erik (2012)
    • Implications of switching from a to-day to a to-week patient scheduling strategy, an application at the UZ Leuven

      Samudra, Michael; Demeulemeester, Erik; Cardoen, Brecht (2013)
      In most hospitals there are some patients who receive surgery later than required. As their health condition can potentially quickly worsen, they are exposed to a health risk. In order to improve the current situation, the lateness of patients has to be, firstly, quantified and, secondly, the responsible mechanism has to be understood, namely the patient scheduling process. We analyzed the percentage of patients being served late in Belgium’s largest hospital, the UZ Leuven. At the hospital, an elective patient is associated with one of five due time intervals within which the patient has to be served. We analyzed the lateness of patients across disciplines using all data from 2012 and 22 ORs. We tried to understand many of the different aspects related to the scheduling process, which knowledge we then included into a simulation model. We investigated from the data: patient arrival patterns, the relation between estimated and realized surgery durations, rescheduling mechanisms and the allocation patterns of emergencies. We also used the model to investigate the effects of switching from the current scheduling practice of assigning surgeries directly to slots (OR and day) to a two-step procedure, where patients are scheduled to a surgery week first and only in a second step to slots. Our results suggest that in case of the two-step procedure it is very important to allow patients with shorter due times to break into the already fixed weekly schedule. Additionally, it is important that in the second step of the scheduling procedure, in the within week scheduling, the due time is considered. We conclude that improving patient scheduling can help to decrease the amount of patients served too late. As a next step, we try to develop a sound scheduling schema, which allows to further decrease the number of patients served to late.