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Journal of Medical Internet Research Impact Factor 4.945 The leading peer-reviewed journal for digital medicine and health and health care in the internet age Advertisement What our readers and authors are saying: Featured Theme Issue View Theme View All Themes Read Article This Theme's Latest Article Featured JMIR Sister Journal Current Issue Upcoming Issue Read Article This Theme's Latest Article Latest Submission Open for Peer-Review Using the Raw NASA Task Load Index Questionnaire to Assess Perceived Workload in Patient Monitoring Tasks: A Meta-Analysis Using a Mixed Model. Background: Patient monitoring is indispensable in any operating room or intensive care unit to follow the patient’s current health state based on measured physiological parameters. Reducing workload helps to free cognitive resources and thus affects human performance, which ultimately improves the quality of care. Out of many methods to assess perceived workload, the NASA-Task Load indeX (NASA-TLX) provides the most widely accepted tool. However, only a few studies have investigated the validity of the NASA-TLX in the health care sector. Objective: This study aimed to validate the raw NASA-TLX in patient monitoring tasks by investigating its correspondence with expected lower and higher workload situations and its robustness against non-workload related covariates. Furthermore, we compared workload scores of conventional patient monitoring with the newly developed visualization technologies “Visual Patient” and “Visual Clot” to further understand the interaction of these technologies regarding perceived workload. Methods: In this meta-analysis, we evaluated raw NASA-TLX scores after performing patient monitoring tasks collected during four different investigator-initiated, computer-based, prospective, multicenter studies conducted in three hospitals with high standard of care in central Europe. In these already published studies, we simplified conventional patient monitoring by creating two new situation awareness-oriented information transfer technologies called Visual Patient and Visual Clot. As participants, we included resident and staff physicians, and nurse anesthetists with completed specialization qualification. We analyzed the raw NASA-TLX scores by fitting mixed linear regression models, and univariate models with different covariates. Results: We assessed a total of 1160 raw NASA-TLX questionnaires after performing specific patient monitoring tasks. Good test performance and higher self-rated diagnostic confidence correlated significantly with lower raw NASA-TLX scores and its sub scores (P<.0001 respectively). Staff physicians rated significantly lower workload scores than residents (P=.0012), whereas nurse anesthetists did not show any difference in the same comparison (P=.83). Standardized distraction resulted in higher rated total raw NASA-TLX scores (P<.001) and sub scores. There was no gender difference regarding perceived workload (P=.26). The new visualization technologies Visual Patient and Visual Clot resulted in significantly lower total raw NASA-TLX scores and all sub scores when compared to conventional monitoring (P<.0001 respectively). Conclusions: This study validates the raw NASA-TLX workload assessment tool for patient monitoring tasks. Assumed workload reducing factors such as good test performance, high confidence, job experience, higher hierarchical job positions and the new monitoring visualization technologies Visual Patient and Visual Clot all correlated with decreased perceived workload. The NASA-TLX was robust against non-workload associated factors such as gender. Further research should focus on its applicability in clinical routine. Date Submitted: Apr 20, 2020 Open Peer Review Period: Apr 20, 2020 - Apr 27, 2020 Peer-Review Me Announcement PREreview + JMIR Publications Virtual COVID-19 Preprint Journal Club: April 14th, 2020 2020-04-06 PREreview + JMIR Publications Virtual COVID-19 Preprint Journal Club (Toronto/Portland, 27 March 2020) In addition to its' previous Call for COVID19 Papers , JMIR Publications has joined forces with PREreview to bring together scientists from across the globe for a virtual discussion and collaborative review of a recent preprint covering new research related to coronavirus SARS-COV-2 leading to the disease referred to as COVID-19. After our previous call for preprint nominations ( archived here ), the paper to be discussed at the journal club has now been selected: “Knowledge and behaviors toward COVID-19 among U.S. residents during the early days of the pandemic” Registration now open : The online journal club will be hosted by two facilitators who will guide participants through a constructive discussion of the preprint following a curated template. The moderators will be joined by an invited expert, the author of the preprint and researchers from all over the world including you! WHEN : April 14th, 2020, 12noon ET HOW: REGISTER NOW to join us and invite others to come along. Not sure if you can join yet? Sign up anyway to receive updates on the events and decide later. WHERE: The video conference software Zoom. Please register using the link above and we will send you the information on how to join the ...