THE MEASUREMENT OF NURSES’ MENTAL WORKLOAD USING NASA-TLX METHOD (A CASE STUDY)
Keywords:Mental workload, NASA-TLX, nurse, healthcare
Nurse is a profession that has a quite high workload. It can be seen from how often they should encounter situations which compel them to undergo precisely right decision in saving patients’ lives. Various environmental conditions increase the frustration rate of the nurses, such as noise of the crowds and medical equipment, as well as smell of medicines and wounds at once. Moreover, demands from the patients’ family make it even tougher for them. Therefore, this study aims to measure the mental workload of the nurses at Intensive Care Unit (ICU) and emergency unit (IGD) in the Hospital ZA based on their years of service. The study was conducted using the method of NASA-TLX (National Aeronautics and Space Administration – Task Load Index). It measured the workload in six dimensions: Mental Demand (MD), Physical Demand (PD), Temporal Demand (TD), Own Performance (P), Effort (EF), and Frustration Rate (FR). The results of the study show that the average value of the nurses’ workload at ICU and IGD is in the category very high (respectively 80 and 83) for the nurses with 0-3 years of service, and the most contributing factor for both the primary groups is the effort (EF).
2. Cao A, Chintamani KK, Pandya AK, & Ellis RD. 2009, NASA TLX: Software for assessing subjective mental workload. Behaviour Research Methods. 41(I), 113–117.
3. Hart SG. 2006, NASA-Task Load Index (NASA-TLX); 20 years later, Proceedings of the Human Factors and Ergonomics Society Annual Meeting. 50: 904.
4. Carayon P, Alyousef B, & Xie A. 2012, Human Factors and Ergonomics in Health Care. In: Handbook of Human Factors and Ergonomics, 4th ed., New Jersey: John Wiley & Sons: ch. 57, pp. 1574–1595.
5. Nachreiner F. 1995, Standards for Ergonomics Principles Relating to the Design of Work Systems and to Mental Workload. Applied Ergonomics. 26 (4), 259–263.
6. Young MS, Brookhuis KA, Wickens CD, & Hancock PA. 2015, State of Science: Mental Workload in Ergonomics. Ergonomics. 58 (1), 1–17.
7. Rubio S, Diaz E, Martin J, & Puente JM. 2004, Evaluation of Subjective Mental Workload: A Comparison of SWAT, NASA-TLX, and Workload Profile Methods. Applied Psychology: An International Review. 53 (1), 61–86.
8. Levin S, France DJ, Hemphill R, Jones I, Chen KY, Rickard D, Makowski R, & Aronsky D. 2006, Tracking Workload in the Emergency Department. Human Factors: The Journal of the Human Factors and Ergonomics Society. 48: 526.
9. Huggins A & Claudio D. 2017, A Performance Comparison between the Subjective Workload Analysis Technique and NASA-TLX in a Healthcare Setting. IISE Transactions on Healthcare Systems Engineering.
10. Dey A & Mann DD. 2010, Sensitivity and Diagnosticity of NASA-TLX and Simplified SWAT to Assess the Mental Workload Associated with Operating an Agricultural Sprayer. Ergonomics. 53 (7), 848–857.
11. Colligan L, Potts HWW, Finn CT, & Sinkin RA. 2015, Cognitive Workload Changes for Nurses Transitioning from a Legacy System with Paper Documentation to a Commercial Electronic Health Record. International Journal of Medical Informatics. 84, 469–4765.