Ravelijn

dr.ir. A.G. Leeftink (Gréanne)

Associate Professor
BMS-HBE-IEMS
Ravelijn 3337
a.g.leeftink@utwente.nl
+31534892881
Business card

Gréanne Leeftink is an associate professor within the department of Industrial Engineering and Management Science (IEMS), in the CHOIR research center at the University of Twente (Enschede).

Gréannes research focus is on healthcare process optimization under uncertainty, using Operations Management/Operations Research techniques.

In 2017, GrĂ©anne completed her PhD with CHOIR, as well as University Medical Center Utrecht. As part of her PhD, she visited Rochester’s Mayo Clinic (USA) on a scholarship of Prins Bernard Cultuurfonds. The focus of her PhD was on the optimization of the shared resources involved in oncology related health care processes, based on a personal NWO talent grant, and resulted in her thesis Why wait? Organizing integrated processes in cancer care.

Expertise

  • Medicine and Dentistry

    • Diagnosis
    • Laboratory
    • Survival
    • Therapeutic Procedure

  • Nursing and Health Professions

    • Time
    • Hospital

  • Computer Science

    • Case Study
    • Scheduling

Organisations

Publications

2026

Optimization of tray inventory levels in hospitals from an integral perspective (2026)Health care management science, 29(1). Article 7. Bos, H., Hosteins, G., Wijnholds, W., Braaksma, A. & Leeftink, G.https://doi.org/10.1007/s10729-025-09743-5

2025

A chance-constrained program for the allocation of nurses in acute home healthcare (2025)Health systems, 14(4), 276-290. Lok-Visser, J., Bos, H., Hans, E. W. & Leeftink, G.https://doi.org/10.1080/20476965.2025.2467643Nursing activities and associated workload of nurses in virtual care centres: A multicentre observational study (2025)PLOS Digital Health, 4(8). Article e0000974 (E-pub ahead of print/First online). Leenen, J. P. L., Lok-Visser, J., Vollenbroek, C., Sonneveld, H., Van Houwelingen, T. & Leeftink, G.https://doi.org/10.1371/journal.pdig.0000974Consensus-based development and practice testing of a generic quality indicator set for parenteral medication administration at home: A RAND appropriateness method study (2025)BMJ open, 15(7). Article e090496. Lok-Visser, J., Hunneman, R., Bekkers, C. H. J., Filius, P. M. G., Lenferink, A., Leeftink, G. & Maring, J. G.https://doi.org/10.1136/bmjopen-2024-090496Bed census prediction combining expert opinion and patient statistics (2025)Omega, 133. Article 103262. Bos, H., Baas, S., Boucherie, R. J., Hans, E. W. & Leeftink, G.https://doi.org/10.1016/j.omega.2024.103262Inter-organizational pooling of NICU nurses in the Dutch neonatal network: A simulation-optimization study (2025)Health care management science, 28(1), 64-83. Article 100695. Leeftink, G., Morris, K., Antonius, T., de Vries, W. & Hans, E.https://doi.org/10.1007/s10729-025-09697-8Stretching Boundaries: Nurses’ Perceptions on Job Demands and Resources in Hospital Float Pools (2025)Journal of nursing management, 2025(1). Article 5468634. Fischer, C., Leeftink, G. & Lenferink, A.https://doi.org/10.1155/jonm/5468634

2024

A prospective cost analysis model for financial impact of Connected Care interventions on hospitals’ budget (2024)Health policy and technology, 13(6). Article 100926. Lok-Visser, J., Leenen, J. P. L., den Hertog, H. M., van Vemde, G., Rekveldt, J., van den Berg, J. W. K., Patijn, G. A., Cornelisse-Vermaat, J. R., Leeftink, G. & Maring, J. G.https://doi.org/10.1016/j.hlpt.2024.100926Criteria-based outpatient scheduling at a nephrology clinic: prospective evaluation of patient pre-assessment and its corresponding adaptive scheduling strategy (2024)BMC health services research, 24. Article 1145. Klaas, R., Lok-Visser, J., Doornebal, J., Roelofs, T., Rachuba, S. & Leeftink, G.https://doi.org/10.1186/s12913-024-11615-7Distributionally robust scheduling of stochastic knapsack arrivals (2024)Computers & operations research, 167. Article 106641. Bos, H., Boucherie, R. J., Hans, E. W. & Leeftink, G.https://doi.org/10.1016/j.cor.2024.106641

Research profiles

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