Construct validity for the LAPSIM laparoscopic surgical simulator

  • A.J. D
  • N.J. H
  • H. M
 et al. 
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Abstract

Background: The skills required for laparoscopic surgery are amenable to simulator-based training. Several computerized devices are now available. We hypothesized that the LAPSIM simulator can be shown to distinguish novice from experienced laparoscopic surgeons, thus establishing construct validity. Methods: We tested residents of all levels and attending laparoscopic surgeons. The subjects were tested on eight software modules. Pass/fail (P/F), time (T), maximum level achieved (MLA), tissue damage (TD), motion, and error scores were compared using the t-test and analysis of variance. Results: A total of 54 subjects were tested. The most significant difference was found when we compared the most (seven attending surgeons) and least experienced (10 interns) subjects. Grasping showed significance at P/F and MLA (p < 0.03). Clip applying was significant for P/F, MLA, motion, and errors (p < 0.02). Laparoscopic suturing was significant for P/F, MLA, T, TD, as was knot error (p < 0.05). This finding held for novice, intermediate, and expert subjects (p < 0.05) and for suturing time between attending surgeons and residents (postgraduate year [PGY] 1-4) (p < 0.05). Conclusions: LAPSIM has construct validity to distinguish between expert and novice laparoscopists. Suture simulation can be used to discriminate between individuals at different levels of residency and expert surgeons. © Springer Science+Business Media, Inc. 2004.

Author-supplied keywords

  • *computer simulation
  • *laparoscopic surgery
  • *residency education
  • *virtual reality
  • Student t test
  • adult
  • analysis of variance
  • article
  • clip
  • comparative study
  • computer program
  • controlled study
  • diagnostic error
  • human
  • normal human
  • postgraduate education
  • priority journal
  • scoring system
  • surgeon
  • suturing method
  • tissue injury/co [Complication]
  • validation process

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Authors

  • Duffy A.J.

  • Hogle N.J.

  • McCarthy H.

  • Lew J.I.

  • Egan A.

  • Christos P.

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