Construct validity of the LapSim virtual reality laparoscopic

Authors

  • Evan Kovac Division of Urology, Department of Surgery, McGill University Health Center, Montreal, Quebec, Canada
  • Raed A. Azhar Division of Urology, Department of Surgery, McGill University Health Center, Montreal, Quebec, Canada
  • Adrienne Quirouet Division of Urology, Department of Surgery, McGill University Health Center, Montreal, Quebec, Canada
  • Josee Delisle Division of Urology, Department of Surgery, McGill University Health Center, Montreal, Quebec, Canada
  • Maurice Anidjar Division of Urology, Department of Surgery, McGill University Health Center, Montreal, Quebec, Canada

DOI:

https://doi.org/10.5489/cuaj.293

Abstract

Objective: We assessed the construct validity of the LapSim laparoscopic surgical simulator in a urology residency training program.

Methods: In total, 15 residents participated in the study between
July 2007 and July 2008. The subjects were tested six times at onemonth intervals on three skill tasks (lifting and grasping, cutting
and clip application) using the LapSim laparoscopic simulator. The
testing sessions were divided into the first three sessions (seminar
1), and the subsequent three sessions (seminar 2). We evaluated the
following parameters: total time, path length, angular path length,
tissue damage, maximum damage and stretch damage. The subjects
were divided into junior (PGY 1,2) and senior resident groups
(PGY 3,4,5). The Wilcoxon Signed-Rank test for paired samples
was used to compare the performances of the juniors and seniors
during seminar 1 to their performance in seminar 2 to determine
whether there was improvement over time. The Wilcoxon Rank-
Sum test for independent samples was used to compare the performance of the juniors to that of the seniors for seminar 1, seminar 2 and the combination of both seminars to determine whether the more experienced senior residents performed better than the less
experienced juniors.

Results: No significant performance improvement between testing
sessions could be demonstrated. Similarly, there was no significant
difference in performance between junior and senior residents.

Conclusions: Construct validity could not be demonstrated for the
total time, path length, angular path length and tissue handling
parameters of the LapSim laparoscopic surgical simulator when
examined within the context of a urology residency program.

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Published

2013-02-21

How to Cite

Kovac, E., Azhar, R. A., Quirouet, A., Delisle, J., & Anidjar, M. (2013). Construct validity of the LapSim virtual reality laparoscopic. Canadian Urological Association Journal, 6(4), 252–8. https://doi.org/10.5489/cuaj.293

Issue

Vol. 6 No. 4 (2012): CUAJ August

Section

Original Research

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