Evaluation of a low-fidelity ear surgery simulator in a low-resource setting

2017 ◽  
Vol 131 (11) ◽  
pp. 1010-1016 ◽  
Author(s):  
K Luu ◽  
L Straatman ◽  
D Nakku ◽  
B Westerberg ◽  
N Carter ◽  
...  
Keyword(s):  
Construct Validity ◽  
Low Cost ◽  
Face Validity ◽  
Measurement Tool ◽  
Ear Surgery ◽  
Training Tool ◽  
Low Resource ◽  
Validity Assessment ◽  
Resource Setting ◽  
Surgery Simulator

AbstractObjective:The provision of healthcare education in developing countries is a complex problem that simulation has the potential to help. This study aimed to evaluate the effectiveness of a low-cost ear surgery simulator, the Ear Trainer.Methods:The Ear Trainer was assessed in two low-resource environments in Cambodia and Uganda. Participants were video-recorded performing four specific middle-ear procedures, and blindly scored using a validated measurement tool. Face validity, construct validity and objective learning were assessed.Results:The Ear Trainer provides a realistic representation of the ear. Construct validity assessment confirmed that experts performed better than novices. Participants displayed improvement in all tasks except foreign body removal, likely because of a ceiling effect.Conclusion:This study validates the Ear Trainer as a useful training tool for otological microsurgical skills in developing world settings.

Development and validation of a low-cost microsurgery Ear Trainer for low-resource settings

2016 ◽  
Vol 130 (10) ◽  
pp. 954-961 ◽  
Author(s):  
M P A Clark ◽  
B D Westerberg ◽  
J E Mitchell
Keyword(s):  
Foreign Body ◽  
Construct Validity ◽  
Low Cost ◽  
Face Validity ◽  
Suppurative Otitis Media ◽  
Foreign Body Removal ◽  
Training Tool ◽  
Realistic Representation ◽  
Surgery Simulator ◽  
Development And Validation

AbstractObjective:Chronic suppurative otitis media is a neglected condition affecting up to 330 million people worldwide, with the burden of the disease in impoverished countries. The need for non-governmental organisations to hardwire training into their programmes has been highlighted. An ear surgery simulator appropriate for training in resource-poor settings was developed, and its effectiveness in facilitating the acquisition of headlight and microsurgical skills necessary to safely perform procedures via the ear canal was investigated.Methods:Face validity was assessed via questionnaires. Six tasks were developed: a headlight foreign body removal task, and microscope tasks of foreign body removal, ventilation tube insertion, tympanomeatal flap raising, myringoplasty and middle-ear manipulation. Participants with varying ENT experience were video-recorded performing each task and scored by a blinded expert observer to assess construct validity.Results:Face validity results confirmed that our Ear Trainer was a realistic representation of the ear. Construct validity results showed a statistically significant trend, with experts performing the best and those with limited experience performing better than novices.Conclusion:This study validates our Ear Trainer as a useful training tool for assessing headlight and microsurgical skills required to perform otological procedures.

scholarly journals Validity assessment of a simulation module for robot-assisted thoracic lobectomy

2018 ◽  
Vol 27 (1) ◽  
pp. 23-29 ◽  
Author(s):  
George Whittaker ◽  
Abdullatif Aydin ◽  
Sinthuri Raveendran ◽  
Faizan Dar ◽  
Prokar Dasgupta ◽  
...  
Keyword(s):  
Robotic Surgery ◽  
Construct Validity ◽  
Face Validity ◽  
Robot Assisted ◽  
Validity Assessment ◽  
King's College ◽  
General Thoracic Surgery ◽  
Robotic Surgery Simulator ◽  
Robotic Surgical Training ◽  
Surgery Simulator

Background Training for robot-assisted thoracic lobectomy remains an issue, prompting the development of virtual reality simulators. Our aim was to assess the construct and face validity of a new thoracic lobectomy module on the RobotiX Mentor, a robotic surgery simulator. We also aimed to determine the acceptability and feasibility of implementation into training. Methods This prospective, observational, and comparative study recruited novice (n = 16), intermediate (n = 9), and expert (n = 5) participants from King's College London, the 25th European Conference on General Thoracic Surgery, and the Society of Robotic Surgery conference 2018. Each participant completed two familiarization tasks followed by the Guided Robotic Lobectomy module and an evaluation questionnaire. Outcome measures were compared using Mann-Whitney U tests. Results Construct validity was demonstrated in 12/21 performance evaluation metrics. Significant differences between groups were found in all metrics including: time taken to complete module, vascular injury, respect for tissue, number of stapler firings, time instruments out of view, number of instrument collisions, and number of movements. Participants deemed aspects of the simulator (mean 3/5) and module (3/5) as realistic and rated the simulator as both acceptable (3.8/5) and feasible (3.8/5) for robotic surgical training. Conclusions Face validity, acceptability, and feasibility were established for the thoracic lobectomy module of the RobotiX Mentor simulator. Moderate evidence of construct validity was also demonstrated. With further work, this simulation module could help to reduce the initial part of the learning curve for trainees and decrease the risk of errors during live training.

Development and Validation of a Novel Surgical Simulation for Parotidectomy and Facial Nerve Dissection

2020 ◽  
Vol 163 (2) ◽  
pp. 344-347
Author(s):  
Fanny Gabrysz-Forget ◽  
Samuel Rubin ◽  
Dmitry Nepomnayshy ◽  
Robert Dolan ◽  
Bharat Yarlagadda
Keyword(s):  
Facial Nerve ◽  
Surgical Simulation ◽  
Copper Wire ◽  
Low Cost ◽  
Face Validity ◽  
Training Tool ◽  
Parotid Surgery ◽  
The Face ◽  
Development And Validation ◽  
Novel Model

We present the development and validation of a low-cost novel model for training of parotid surgery. The model consists of a 3-dimensionally printed skeleton, silicone-based soft tissue, and facial nerve replicated with copper wire, circuited to indicate contact with instruments. The face validity of the simulator was evaluated with a 21-item 5-point Likert survey. Content validity was evaluated through a survey completed by the trainees after their first live parotidectomy following the simulation. Twelve residents and 6 faculty completed the simulated procedure of superficial parotidectomy after watching a video demonstration. Completion of 16 surgical steps evaluated by this model was graded for each participant. The mean ± SD total assessment score for faculty was 15.83 ± 0.41, as compared with 13.33 ± 2.06 for residents ( P = .0081). The simulator as a training tool was well received by both faculty and residents (5 vs 4, P = .0206). Participants strongly agreed that junior residents would benefits from use of the model.

scholarly journals Validation of the da Vinci Surgical Skill Simulator across three surgical disciplines

2013 ◽  
Vol 7 (7-8) ◽  
pp. 520 ◽  
Author(s):  
Tarek Alzahrani ◽  
Richard Haddad ◽  
Abdullah Alkhayal ◽  
Josee Delisle ◽  
Laura Drudi ◽  
...  
Keyword(s):  
Construct Validity ◽  
General Surgery ◽  
Content Validity ◽  
Da Vinci ◽  
Wilcoxon Test ◽  
Face Validity ◽  
Training Tool ◽  
Level 1 ◽  
Board Level ◽  
Level 2

Objective: In this paper, we evaluate face, content and construct validity of the da Vinci Surgical Skills Simulator (dVSSS) across 3 surgical disciplines.Methods: In total, 48 participants from urology, gynecology and general surgery participated in the study as novices (0 robotic cases performed), intermediates (1-74) or experts (≥75). Each participant completed 9 tasks (Peg board level 2, match board level 2, needle targeting, ring and rail level 2, dots and needles level 1, suture sponge level 2, energy dissection level 1, ring walk level 3 and tubes). The Mimic Technologies software scored each task from 0 (worst) to 100 (best) using several predetermined metrics. Face and content validity were evaluated by a questionnaire administered after task completion. Wilcoxon test was used to perform pairwise comparisons.Results: The expert group comprised of 6 attending surgeons. The intermediate group included 4 attending surgeons, 3 fellows and 5 residents. The novices included 1 attending surgeon, 1 fellow, 13 residents, 13 medical students and 2 research assistants. The median number of robotic cases performed by experts and intermediates were 250 and 9, respectively. The median overall realistic score (face validity) was 8/10. Experts rated the usefulness of the simulator as a training tool for residents (content validity) as 8.5/10. For construct validity, experts outperformed novices in all 9 tasks (p < 0.05). Intermediates outperformed novices in 7 of 9 tasks (p < 0.05); there were no significant differences in the energy dissection and ring walk tasks. Finally, experts scored significantly better than intermediates in only 3 of 9 tasks (matchboard, dots and needles and energy dissection) (p < 0.05).Conclusions: This study confirms the face, content and construct validities of the dVSSS across urology, gynecology and general surgery. Larger sample size and more complex tasks are needed to further differentiate intermediates from experts.

1216 FACE AND CONSTRUCT VALIDITY ASSESSMENT OF 2ND GENERATION ROBOTIC SURGERY SIMULATOR

2011 ◽  
Vol 185 (4S) ◽  
Author(s):  
Ruslan Korets ◽  
Joseph A. Graversen ◽  
Adam C. Mues ◽  
Mantu Gupta ◽  
Jaime Landman ◽  
...  
Keyword(s):  
Robotic Surgery ◽  
Construct Validity ◽  
2Nd Generation ◽  
Validity Assessment ◽  
Robotic Surgery Simulator ◽  
Surgery Simulator

scholarly journals Validation of a Novel Virtual Reality Simulator for Robotic Surgery

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Henk W. R. Schreuder ◽  
Jan E. U. Persson ◽  
Richard G. H. Wolswijk ◽  
Ingmar Ihse ◽  
Marlies P. Schijven ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Robotic Surgery ◽  
Construct Validity ◽  
Face Validity ◽  
Virtual Reality Simulator ◽  
Training Methods ◽  
Robot Assisted ◽  
Training Tool ◽  
Training Capacity ◽  
Comparative Cohort Study

Objective. With the increase in robotic-assisted laparoscopic surgery there is a concomitant rising demand for training methods. The objective was to establish face and construct validity of a novel virtual reality simulator (dV-Trainer, Mimic Technologies, Seattle, WA) for the use in training of robot-assisted surgery.Methods. A comparative cohort study was performed. Participants (n=42) were divided into three groups according to their robotic experience. To determine construct validity, participants performed three different exercises twice. Performance parameters were measured. To determine face validity, participants filled in a questionnaire after completion of the exercises.Results. Experts outperformed novices in most of the measured parameters. The most discriminative parameters were “time to complete” and “economy of motion” (P<0.001). The training capacity of the simulator was rated 4.6 ± 0.5 SD on a 5-point Likert scale. The realism of the simulator in general, visual graphics, movements of instruments, interaction with objects, and the depth perception were all rated as being realistic. The simulator is considered to be a very useful training tool for residents and medical specialist starting with robotic surgery.Conclusions. Face and construct validity for the dV-Trainer could be established. The virtual reality simulator is a useful tool for training robotic surgery.

Measuring validity and reliability of website credibility factors in influencing user engagement questionnaire

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Farrah Diana Saiful Bahry ◽  
Maslin Masrom ◽  
Mohamad Noorman Masrek
Keyword(s):  
Construct Validity ◽  
Content Validity ◽  
Content Management ◽  
Survey Instrument ◽  
Face Validity ◽  
User Engagement ◽  
Content Type ◽  
Validity Assessment ◽  
The Government ◽  
Website Content

Purpose The purpose of this paper is to show the importance of validity process in survey questionnaire instrument development. It is to confirm all items chosen are valid in the context of study, especially in assessing municipal website Web user behaviours. The quality of measurement also can be assured. Design/methodology/approach Several methods used to assess validity of the survey instrument in this study, such as face validity, content validity index (CVI) and construct validity. CVI assessment is widely used to examine each item in the survey instrument exact measures what is supposed to be measured. Prolific items used to evaluate web aesthetic, usability, navigation, content organization, interactivity and user engagement. Findings Several items were rephrased and simplified during face validity assessment, while three items from user engagement construct were excluded after the CVI assessment. Reliability and redundancy analysis had shown good results for each item and construct for both dependent and independent variables. None of the items in any construct need to be eliminated. Research limitations/implications The face validity, content validity and construct validity assessments are sufficient to assure the consistency of the conceptual framework, the content of items and overall measurement approach reflecting the setting or context of study which are web users. Practical implications The validated survey instrument provides practical guidelines for government municipal website owners on how to stimulate website user to keep engaged on the government municipal website. Identified website content that acts as credibility cues can be as object attention when planning the strategy of Web content management. Through proper design and attracting touch up, the credibility cues can attract website user and force the user to engage deeper on the government municipal website content, believe it as the main source of information and recognize it as authoritative organization. Originality/value The measurement model of this study that consists of formative construct of surface credibility, and user engagement is proposed to be tested in a different context of this study.

Construct Validity, Assessment of the Learning Curve, and Experience of Using a Low-Cost Arthroscopic Surgical Simulator

2017 ◽  
Vol 74 (1) ◽  
pp. 47-54 ◽  
Author(s):  
Henry B. Colaco ◽  
Katie Hughes ◽  
Eyiyemi Pearse ◽  
Magnus Arnander ◽  
Duncan Tennent
Keyword(s):  
Construct Validity ◽  
Learning Curve ◽  
Low Cost ◽  
Surgical Simulator ◽  
Validity Assessment

scholarly journals Validation of NOViSE

2016 ◽  
Vol 24 (1) ◽  
pp. 55-65 ◽  
Author(s):  
Przemyslaw Korzeniowski ◽  
Daniel C. Brown ◽  
Mikael H. Sodergren ◽  
Alastair Barrow ◽  
Fernando Bello
Keyword(s):  
Construct Validity ◽  
Content Validity ◽  
Force Feedback ◽  
Performance Metrics ◽  
Face Validity ◽  
Task Completion ◽  
Training Tool ◽  
Surgical Trainees ◽  
Applied Forces ◽  
Strongly Agree

The goal of this study was to establish face, content, and construct validity of NOViSE—the first force-feedback enabled virtual reality (VR) simulator for natural orifice transluminal endoscopic surgery (NOTES). Fourteen surgeons and surgical trainees performed 3 simulated hybrid transgastric cholecystectomies using a flexible endoscope on NOViSE. Four of them were classified as “NOTES experts” who had independently performed 10 or more simulated or human NOTES procedures. Seven participants were classified as “Novices” and 3 as “Gastroenterologists” with no or minimal NOTES experience. A standardized 5-point Likert-type scale questionnaire was administered to assess the face and content validity. NOViSE showed good overall face and content validity. In 14 out of 15 statements pertaining to face validity (graphical appearance, endoscope and tissue behavior, overall realism), ≥50% of responses were “agree” or “strongly agree.” In terms of content validity, 85.7% of participants agreed or strongly agreed that NOViSE is a useful training tool for NOTES and 71.4% that they would recommend it to others. Construct validity was established by comparing a number of performance metrics such as task completion times, path lengths, applied forces, and so on. NOViSE demonstrated early signs of construct validity. Experts were faster and used a shorter endoscopic path length than novices in all but one task. The results indicate that NOViSE authentically recreates a transgastric hybrid cholecystectomy and sets promising foundations for the further development of a VR training curriculum for NOTES without compromising patient safety or requiring expensive animal facilities.

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