Construct and face validity of SINERGIA laparoscopic virtual reality simulator.
OBJECTIVE
Laparoscopic techniques have nowadays become a gold standard in many surgical procedures, but they imply a more difficult learning skills process. Simulators have a fundamental role in the formative stage of new surgeons. This paper presents the construct and face validity of SINERGIA laparoscopic virtual reality simulator in order to decide whether it can be considered as an assessment tool.


METHODS
Twenty people participated in this study, 14 were novices and 6 were experts. Five tasks of SINERGIA were included in the study: coordination, navigation, navigation and touch, precise grasping and coordinate traction. For each one of these tasks, a certain number of metrics are automatically recorded. All subjects accomplished each task only once and filled in two questionnaires. A statistical analysis was made and results from both groups were compared with the Mann-Whitney U-test, considering significant differences when P < or = 0.05. Internal consistency of the system has been analyzed with the Cronbach's alpha test.


RESULTS
Novices and experts positively rated SINERGIA characteristics. At least one of the evaluated metrics of each exercise presented significant differences between both groups. Nevertheless, all metrics under study gave a better punctuation to the executions accomplished by experts (lower time, higher efficiency, fewer errors. . .) than to those made by novices.


CONCLUSIONS
SINERGIA laparoscopic virtual reality simulator is able to discriminate subjects according to their level of experience in laparoscopic surgery; therefore, it can be used within a training program as an assessment tool.
Sánchez-Peralta
Luisa F
LF
Minimally Invasive Surgery Centre Jesús Usón, Cáceres, Spain. lfsanchez@ccmijesususon.com
Sánchez-Margallo
Francisco M
FM
Moyano-Cuevas
José Luis
JL
Pagador
José Blas
JB
Enciso-Sanz
Silvia
S
Sánchez-González
Patricia
P
Gómez-Aguilera
Enrique J
EJ
Usón-Gargallo
Jesús
J
D000328:Adult; D002983:Clinical Competence; D003198:Computer Simulation; D003194:Computer-Assisted Instruction / Q000295:instrumentation*; D013502:General Surgery / Q000193:education*; D006801:Humans; D010535:Laparoscopy / Q000592:standards*; D013030:Spain; D018709:Statistics, Nonparametric; D011795:Surveys and Questionnaires; D013647:Task Performance and Analysis; D014584:User-Computer Interface