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Face, Content, and Construct Validity of the Take-Home EoSim Augmented Reality Laparoscopy Simulator for Basic
Elke E A Arts1, Erik Leijte1, Bart P L Witteman2
1Department of Surgery, Radboud University Medical Center, Nijmegen, the Netherlands.
Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
|October 16, 2019
Summary
The eoSim laparoscopic augmented reality (AR) simulator is a realistic and useful tool for training basic laparoscopic skills. While it shows good face validity, construct validity was not fully demonstrated across all variables.
Area of Science:
- Medical Simulation
- Surgical Education Technology
- Augmented Reality in Medicine
Background:
- Laparoscopic surgery requires specialized training to develop essential psychomotor skills.
- Augmented reality (AR) simulators offer a promising avenue for enhancing surgical training with instrument tracking.
- The eoSim® AR simulator's potential for laparoscopic training necessitates validation of its effectiveness.
Purpose of the Study:
- To assess the face, content, and construct validity of the eoSim® laparoscopic AR simulator.
- To evaluate the simulator's suitability for training basic laparoscopic skills.
- To compare performance metrics between novice, intermediate, and expert surgical trainees.
Main Methods:
- Participants were categorized into novice, intermediate, and expert groups based on laparoscopic procedure experience.
- Three basic laparoscopic tasks (thread transfer, cyst dissection, tube ligation) were performed on the eoSim® simulator.
- Questionnaires assessed perceived realism, didactic value, and usability; performance was measured by time, distance, and instrument control parameters.
Main Results:
- The eoSim® simulator received positive ratings for realism, didactic value, and high scores for usability across all tasks.
- Experts demonstrated significantly faster completion times for all tasks compared to novices and intermediates.
- While experts showed better instrument control and efficiency, not all performance differences reached statistical significance between groups.
Conclusions:
- The eoSim® laparoscopic AR simulator is considered a realistic, accessible, and valuable tool for foundational laparoscopic skills training, exhibiting good face validity.
- The simulator demonstrated construct validity for several core variables, indicating its potential utility in surgical education.
- Further refinement may be needed to fully establish construct validity across all measured parameters for diverse skill levels.
