Construct, concurrent, and content validity of the eoSim laparoscopic simulator

J Laparoendosc Adv Surg Tech A. 2013 Oct;23(10):855-60. doi: 10.1089/lap.2013.0229. Epub 2013 Aug 22.


Background: The purpose of this study was to validate the eoSim box laparoscopic simulator using measures of construct, concurrent, and content validity.

Subjects and methods: Forty-seven novice and expert participants were tested on both the Fundamentals of Laparoscopic Surgery (FLS™; Society of American Gastrointestinal and Endoscopic Surgeons, Los Angles, CA) and eoSim (eoSurgical™, Edinburgh, Scotland, United Kingdom) laparoscopic simulators, using established scoring mechanisms. Three skill areas were examined: object transfer, precision cutting, and intracorporeal suturing. A questionnaire was also completed.

Results: Experts performed significantly better on the eoSim than novices, with a median score of 51.1% versus 14.8% (P<.0001), showing construct validity. There was a high correlation between performance on the validated FLS simulator and the eoSim (0.78; P<.0001), demonstrating concurrent validity. Feedback from participants indicated an agreement that the eoSim was a useful training tool providing content validity.

Conclusions: The eoSim demonstrates validity as a model for laparoscopic simulation. It is hoped that its decreased cost relative to other simulators will encourage increased uptake by trainees and institutions.

MeSH terms

  • Adolescent
  • Adult
  • Attitude of Health Personnel
  • Clinical Competence*
  • Computer Simulation*
  • Female
  • Humans
  • Laparoscopy / education*
  • Laparoscopy / instrumentation
  • Male
  • Middle Aged
  • Reproducibility of Results
  • User-Computer Interface*
  • Young Adult