Yucel Yilmaz OzturkogluYigit KazancogluMuhittin SaǧnakJose Arturo Garza-Reyes2025-10-062021245577492455-774910.33889/ijmems.2021.6.3.045https://www.scopus.com/inward/record.uri?eid=2-s2.0-85107683729&doi=10.33889%2Fijmems.2021.6.3.045&partnerID=40&md5=5c48507b1379df2a8cb0e7e6e908073dhttps://gcris.yasar.edu.tr/handle/123456789/8964Since 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. © 2023 Elsevier B.V. All rights reserved.English-operating Rooms, Gage Control, Lean Approach, Lighting, Measurement System Analysis, Six Sigma, Calibration, Efficiency, Lighting, Operating Rooms, Process Monitoring, Quality Assurance, Quality Control, Systems Analysis, Work Simplification, -operating Room, Control Methods, Gage Control, Healthcare Industry, Lean Approach, Lean Six Sigma, Measurement Process, Measurement Systems Analysis, Planning And Designings, Six-sigma, Six SigmaCalibration, Efficiency, Lighting, Operating rooms, Process monitoring, Quality assurance, Quality control, Systems analysis, Work simplification, -operating room, Control methods, Gage control, Healthcare industry, Lean approach, Lean Six Sigma, Measurement process, Measurement systems analysis, Planning and designings, Six-Sigma, Six sigmaArticle