Forecasting the consumption of medical consumables used in the emergency department using machine learning methods: A private hospital case
Published 2026-09-25
Keywords
- Tıbbi Sarf Malzeme; Makine Öğrenmesi, Tüketim Tahmini
- Medical Consumables; Machine Learning, Consumption Forecasting
How to Cite
Copyright (c) 2026 Ercan Çulha- Abdullah Mısırlıoğlu- Refika Sultan Doğan

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
How to Cite
Abstract
Objective: This study examines whether monthly consumption of high-volume medical consumables in an emergency department can be forecast using machine learning. Method: Six algorithms were compared using 480 monthly observations for 10 items from a private hospital in Ankara (2022–2025). Hyperparameters were tuned through chronological, month-grouped cross-validation. The best-performing model was selected solely from cross-validation results, while the held-out test set was used only for independent validation. Emergency-department visit volume was included in lagged form. Findings: Random Forest was selected as the best-performing model (cross-validation R²=0.792; SD=0.008) and achieved an independent test R² of 0.887. Ablation analysis showed no measurable incremental contribution of visit volume to Random Forest, although positive contributions were observed in linear models. Conclusion: The relationship between visit volume and consumption was limited at the product level. The model may support aggregate budgeting and human-supervised decision-making, but it is not sufficient as a standalone tool for automated product-level ordering.
References
- Ali, M. K. M., Rabiu, S., & Ismail, M. T. (2025). Analytical inventory management and optimization: Theories, methods and applications (1st ed.). CRC Press. https://doi.org/10.1201/9781003534860
- Altin, F. G., Budak, İ., & Özcan, F. (2023). Predicting the amount of medical waste using kernel-based SVM and deep learning methods for a private hospital in Turkey. Sustainable Chemistry and Pharmacy, 33, Article 101060. https://doi.org/10.1016/j.scp.2023.101060
- Asheim, A., Bjørnsen, L. P. B. W., Næss-Pleym, L. E., Uleberg, O., Dale, J., & Nilsen, S. M. (2019). Real-time forecasting of emergency department arrivals using prehospital data. BMC Emergency Medicine, 19, Article 42. https://doi.org/10.1186/s12873-019-0256-z
- Ayer, T., White, C. C., & Zhang, C. (2023). Healthcare inventory management. In J. J. Song (Ed.), Research handbook on inventory management (pp. 431–454). Edward Elgar Publishing. https://doi.org/10.4337/9781800377103.00027
- Chen, T., & Guestrin, C. (2016). XGBoost: A scalable tree boosting system. In Proceedings of the 22nd ACM SIGKDD International Conference on Knowledge Discovery and Data Mining (pp. 785–794). ACM. https://doi.org/10.1145/2939672.2939785
- Géron, A. (2019). Hands-on machine learning with Scikit-Learn, Keras, and TensorFlow: Concepts, tools, and techniques to build intelligent systems (2nd ed.). O’Reilly Media.
- Goodfellow, I., Bengio, Y., & Courville, A. (2016). Deep learning. MIT Press.
- Hoerl, A. E., & Kennard, R. W. (1970). Ridge regression: Biased estimation for nonorthogonal problems. Technometrics, 12(1), 55–67. https://doi.org/10.1080/00401706.1970.10488634
- Hyndman, R. J., & Koehler, A. B. (2006). Another look at measures of forecast accuracy. International Journal of Forecasting, 22(4), 679–688. https://doi.org/10.1016/j.ijforecast.2006.03.001
- James, G., Witten, D., Hastie, T., & Tibshirani, R. (2013). An introduction to statistical learning: With applications in R. Springer. https://doi.org/10.1007/978-1-4614-7138-7
- Jones, S. S., Thomas, A., Evans, R. S., Welch, S. J., Haug, P. J., & Snow, G. L. (2008). Forecasting daily patient volumes in the emergency department. Academic Emergency Medicine, 15(2), 159–170. https://doi.org/10.1111/j.1553-2712.2007.00032.x
- Khokhar, S. A. (2023). The challenges of inventory management in medical supply chain. South Asian Journal of Operations and Logistics, 2(2), 1–17. https://doi.org/10.57044/SAJOL.2023.2.2.2306
- Kuhn, M., & Johnson, K. (2013). Applied predictive modeling. Springer. https://doi.org/10.1007/978-1-4614-6849-3
- Landry, S., & Beaulieu, M. (2013). The challenges of hospital supply chain management, from central stores to nursing units. In B. T. Denton (Ed.), Handbook of healthcare operations management: Methods and applications (pp. 465–482). Springer. https://doi.org/10.1007/978-1-4614-5885-2_18
- Langabeer, J. R., & Helton, J. (2021). Health care operations management: A systems perspective. Jones & Bartlett Learning.
- Leys, C., Ley, C., Klein, O., Bernard, P., & Licata, L. (2013). Detecting outliers: Do not use standard deviation around the mean, use absolute deviation around the median. Journal of Experimental Social Psychology, 49(4), 764–766. https://doi.org/10.1016/j.jesp.2013.03.013
- Liu, P. (2020). Intermittent demand forecasting for medical consumables with short life cycle using a dynamic neural network during the COVID-19 epidemic. Health Informatics Journal, 26(4), 3106–3122. https://doi.org/10.1177/1460458220954730
- Montero-Manso, P., & Hyndman, R. J. (2021). Principles and algorithms for forecasting groups of time series: Locality and globality. International Journal of Forecasting, 37(4), 1632–1653. https://doi.org/10.1016/j.ijforecast.2021.03.004
- Saha, E., & Ray, P. K. (2019). Modelling and analysis of inventory management systems in healthcare: A review and reflections. Computers & Industrial Engineering, 137, Article 106051. https://doi.org/10.1016/j.cie.2019.106051
- Sayın, H. C. (2016). Envanter yönetimi. In D. Paşaoğlu (Ed.), Depolama & envanter yönetimi (pp. 116–139). Anadolu Üniversitesi Yayınları.
- Tuominen, J., Lomio, F., Oksala, N., Palomäki, A., Peltonen, J., Huttunen, H., & Roine, A. (2022). Forecasting daily emergency department arrivals using high-dimensional multivariate data: A feature selection approach. BMC Medical Informatics and Decision Making, 22, Article 134. https://doi.org/10.1186/s12911-022-01878-7
- Türkiye İstatistik Kurumu. (2024). Sağlık harcamaları istatistikleri, 2023 [Haber bülteni]. https://data.tuik.gov.tr/Bulten/Index?p=Saglik-Harcamalari-Istatistikleri-2023-53561
- Vollmer, M. A., Glampson, B., Mellan, T., Mishra, S., Mercuri, L., Costello, C., Klaber, R., Cooke, G., Flaxman, S., & Bhatt, S. (2021). A unified machine learning approach to time series forecasting applied to demand at emergency departments. BMC Emergency Medicine, 21(1), Article 9. https://doi.org/10.1186/s12873-020-00395-y


