scholarly journals Assessment of Construct Validity of a Virtual Reality Laparoscopy Simulator

2007 ◽  
Vol 17 (4) ◽  
pp. 407-413 ◽  
Author(s):  
Rachel Rosenthal ◽  
Walter A. Gantert ◽  
Christian Hamel ◽  
Dieter Hahnloser ◽  
Juerg Metzger ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Construct Validity ◽  
Laparoscopy Simulator

scholarly journals Face, Content, and Construct Validity of a Virtual Reality Otoscopy Simulator and Applicability to Medical Training

2021 ◽  
pp. 019459982110328
Author(s):  
Tobias Albrecht ◽  
Christoph Nikendei ◽  
Mark Praetorius
Keyword(s):  
Virtual Reality ◽  
Medical Students ◽  
Construct Validity ◽  
Content Validity ◽  
Medical Training ◽  
Controlled Trial ◽  
Correct Diagnosis ◽  
Age Groups ◽  
Tertiary Referral Center ◽  
The Face

Objective Otologic diseases are common in all age groups and can significantly impair the function of this important sensory organ. To make a correct diagnosis, the correct handling of the otoscope and a correctly performed examination are essential. A virtual reality simulator could make it easier to teach this difficult-to-teach skill. The aim of this study was to assess the face, content, and construct validity of the novel virtual reality otoscopy simulator and the applicability to otologic training. Study Design Face and content validity was assessed with a questionnaire. Construct validity was assessed in a prospectively designed controlled trial. Setting Training for medical students at a tertiary referral center. Method The questionnaire used a 6-point Likert scale. The otoscopy was rated with a modified Objective Structured Assessment of Technical Skills. Time to complete the task and the percentage of the assessed eardrum surface were recorded. Results The realism of the simulator and the applicability to medical training were assessed across several items. The ratings suggested good face and content validity as well as usefulness and functionality of the simulator. The otolaryngologists significantly outperformed the student group in all categories measured (P < .0001), suggesting construct validity of the simulator. Conclusion In this study, we could demonstrate face, content, and construct validity for a novel high-fidelity virtual reality otoscopy simulator. The results encourage the use of the otoscopy simulator as a complementary tool to traditional teaching methods in a curriculum for medical students.

scholarly journals Construct, Face, and Content Validation on Voxel-Man® Simulator for Otologic Surgical Training

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
M. Varoquier ◽  
C. P. Hoffmann ◽  
C. Perrenot ◽  
N. Tran ◽  
C. Parietti-Winkler
Keyword(s):  
Virtual Reality ◽  
Construct Validity ◽  
Surgical Training ◽  
Teaching Methods ◽  
Traditional Teaching ◽  
Virtual Reality Simulator ◽  
Expert Group ◽  
Traditional Teaching Methods ◽  
The Face ◽  
Nose And Throat

Objective. To assess the face, content, and construct validity of the Voxel-Man TempoSurg Virtual Reality simulator. Participants and Methods. 74 ear, nose, and throat (ENT) surgeons participated. They were assigned to one of two groups according to their level of expertise: the expert group (n=16) and the novice group (n=58). The participants performed four temporal bone dissection tasks on the simulator. Performances were assessed by a global score and then compared to assess the construct validity of the simulator. Finally, the expert group assessed the face and content validity by means of a five-point Likert-type scale. Results. experienced surgeons performed better (p<.01) and faster (p<.001) than the novices. However, the groups did not differ in terms of bone volume removed (p=.11) or number of injuries (p=.37). 93.7% of experienced surgeons stated they would recommend this simulator for anatomical learning. Most (87.5%) also thought that it could be integrated into surgical training. Conclusion. The Voxel-Man TempoSurg Virtual Reality simulator constitutes an interesting complementary tool to traditional teaching methods for training in otologic surgery.

Face and construct validity of virtual reality simulation of laparoscopic gynecologic surgery

2009 ◽  
Vol 200 (5) ◽  
pp. 540.e1-540.e8 ◽  
Author(s):  
Henk W.R. Schreuder ◽  
Koen W. van Dongen ◽  
Susan J. Roeleveld ◽  
Marlies P. Schijven ◽  
Ivo A.M.J. Broeders
Keyword(s):  
Virtual Reality ◽  
Construct Validity ◽  
Gynecologic Surgery ◽  
Virtual Reality Simulation ◽  
Laparoscopic Gynecologic Surgery

scholarly journals Exploring sensorimotor performance and user experience within a virtual reality golf putting simulator

2020 ◽  
Author(s):  
David J. Harris ◽  
Gavin Buckingham ◽  
Mark R. Wilson ◽  
Jack Brookes ◽  
Faisal Mushtaq ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Construct Validity ◽  
Real World ◽  
High Performance ◽  
Task Demands ◽  
Self Report ◽  
The Real ◽  
Task Load ◽  
Golf Putting ◽  
Effective Transfer

Abstract In light of recent advances in technology, there has been growing interest in virtual reality (VR) simulations for training purposes in a range of high-performance environments, from sport to nuclear decommissioning. For a VR simulation to elicit effective transfer of training to the real-world, it must provide a sufficient level of validity, that is, it must be representative of the real-world skill. In order to develop the most effective simulations, assessments of validity should be carried out prior to implementing simulations in training. The aim of this work was to test elements of the physical fidelity, psychological fidelity and construct validity of a VR golf putting simulation. Self-report measures of task load and presence in the simulation were taken following real and simulated golf putting to assess psychological and physical fidelity. The performance of novice and expert golfers in the simulation was also compared as an initial test of construct validity. Participants reported a high degree of presence in the simulation, and there was little difference between real and virtual putting in terms of task demands. Experts performed significantly better in the simulation than novices (p = .001, d = 1.23), and there was a significant relationship between performance on the real and virtual tasks (r = .46, p = .004). The results indicated that the simulation exhibited an acceptable degree of construct validity and psychological fidelity. However, some differences between the real and virtual tasks emerged, suggesting further validation work is required.

scholarly journals Development and validation of a virtual reality transrectal ultrasound guided prostatic biopsy simulator

2013 ◽  
Vol 5 (1) ◽  
pp. 19 ◽  
Author(s):  
Venu Chalasani ◽  
Derek W. Cool ◽  
Shi Sherebrin ◽  
Aaron Fenster ◽  
Joseph Chin ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Construct Validity ◽  
Transrectal Ultrasound ◽  
Face Validity ◽  
Imaging Data ◽  
Prostatic Biopsy ◽  
Validity Testing ◽  
Left And Right ◽  
The Right ◽  
Development And Validation

Objective: We present the design, reliability, face, content andconstruct validity testing of a virtual reality simulator for transrectalultrasound (TRUS), which allows doctors-in-training to performmultiple different biopsy schemes.Methods: This biopsy system design uses a regular “end-firing”TRUS probe. Movements of the probe are tracked with a micromagneticsensor to dynamically slice through a phantom patient’s3D prostate volume to provide real-time continuous TRUS views.3D TRUS scans during prostate biopsy clinics were recorded.Intrinsic reliability was assessed by comparing the left side of theprostate to the right side of the prostate for each biopsy. A contentand face validity questionnaire was administered to 26 doctors toassess the simulator. Construct validity was assessed by comparingnotes from experts and novices with regards to the time taken andthe accuracy of each biopsy.Results: Imaging data from 50 patients were integrated into thesimulator. The completed VR TRUS simulator uses real patientimages, and is able to provide simulation for 50 cases, with ahaptic interface that uses a standard TRUS probe and biopsy needle.Intrinsic reliability was successfully demonstrated by comparingresults from the left and right sides of the prostate. Face andcontent validity respondents noted the realism of the simulator,and its appropriateness as a teaching model. The simulator wasable to distinguish between experts and novices during constructvalidity testing.Conclusions: A virtual reality TRUS simulator has successfully beencreated. It has promising face, content and construct validity results.

scholarly journals Validation studies of virtual reality simulation performance metrics for mechanical thrombectomy in ischemic stroke

2019 ◽  
Vol 11 (8) ◽  
pp. 775-780 ◽  
Author(s):  
Robert Crossley ◽  
Thomas Liebig ◽  
Markus Holtmannspoetter ◽  
Johan Lindkvist ◽  
Pat Henn ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Ischemic Stroke ◽  
Construct Validity ◽  
Mechanical Thrombectomy ◽  
Performance Metrics ◽  
Group Differences ◽  
Delphi Panel ◽  
Simulation Performance ◽  
Shortage Of Doctors ◽  
Stroke Group

IntroductionMechanical thrombectomy (MT) has transformed the treatment of ischemic stroke. However, patient access to MT may be limited due to a shortage of doctors specifically trained to perform MT. The studies reported here were done to (1) develop, operationally define, and seek consensus from procedure experts on the metrics which best characterize a reference procedure for the performance of an MT for ischemic stroke and (2) evaluate their construct validity when implemented in a virtual reality (VR) simulation.MethodsIn study 1, the metrics for a reference approach to an MT procedure for ischemic stroke of 10 phases, 46 steps, and 56 errors and critical errors, were presented to an international Delphi panel of 21 consultant level interventional neuroradiologists (INRs). In study 2, the metrics were used to assess 8 expert and 10 novice INRs performing a VR simulated routine MT procedure.ResultsIn study 1, the Delphi panel reached consensus on the appropriateness of the procedure metrics for a reference approach to MT in ischemic stroke. Group differences in median scores in study 2 demonstrated that experienced INRs performed the case 19% faster (P=0.029), completed 40% more procedure phases (P=0.009), 20% more steps (P=0.012), and made 42% fewer errors (P=0.016) than the novice group.ConclusionsThe international Delphi panel agreed metrics implemented in a VR simulation of MT distinguished between the computer scored procedure performance of INR experts and novices. The studies reported here support the demonstration of face, content, and construct validity of the MT metrics.

Face and Construct Validity of a Computer-Based Virtual Reality Simulator for Endoscopic Retrograde Cholangiopancreatography

2008 ◽  
Vol 67 (5) ◽  
pp. AB299
Author(s):  
James G. Bittner ◽  
Obinna Ezeamuzie ◽  
Toufic Imam ◽  
Bruce V. Macfadyen ◽  
Robert R. Schade ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Construct Validity ◽  
Endoscopic Retrograde Cholangiopancreatography ◽  
Virtual Reality Simulator ◽  
Endoscopic Retrograde ◽  
Computer Based
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