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Quality assurance for operating room illumination through lean six sigmaOzturkoglu, Y; Kazancoglu, Y; Sagnak, M; Garza-Reyes, Jose Arturo; Yasar University, Universite Caddesi, Bornova, Izmir, Turkey; Izmir Kâtip Celebi University, Balatcik Kampusu, Cigli, Izmir, Turkey; University of Derby (International Journal of Mathematical, Engineering and Management Sciences, India, 2021-06)Since every mistake made in the healthcare industry can cause permanent harm or even death, some fundamental requirements should be considered when planning and designing operating rooms. Lighting is one of the most important ergonomic factors, especially for operating rooms. This paper investigates the integration of the lean approach and six sigma in measuring the efficiency of LED technology, which can also be regarded as a factor affecting the operating room efficiency. Measurement System Analysis (MSA) and Gage Control methods were applied to determine measurement variability in operating room illumination measurement process. Repeatability and reproducibility (%R&R) was found 12.89%. After calibration, %R&R value was found 8.21%, which implies that calibration helped reduce variability.