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Evaluating laparoscopic skills: setting the pass/fail score for the MISTELS system
S A Fraser1, D R Klassen, L S Feldman
1Steinberg-Bernstein Centre for Minimally Invasive Surgery, McGill University, Montreal, Canada.
Surgical Endoscopy
|March 27, 2003
Summary
The McGill Inanimate System for Training and Evaluation of Laparoscopic Skills (MISTELS) provides objective laparoscopic skill assessment. This study established a pass/fail threshold, enabling clear discrimination between competent and noncompetent surgeons.
Area of Science:
- Surgical Education
- Medical Simulation
- Laparoscopic Surgery Training
Background:
- The McGill Inanimate System for Training and Evaluation of Laparoscopic Skills (MISTELS) was developed for objective laparoscopic skill assessment.
- Previous descriptions of the MISTELS system exist.
- The current study aimed to establish a pass/fail threshold for MISTELS.
Purpose of the Study:
- To determine a reliable pass/fail threshold for the MISTELS.
- To validate the MISTELS system for differentiating surgical competency levels.
Main Methods:
- 165 participants were tested and categorized into competent and noncompetent laparoscopic surgery groups.
- The noncompetent group included junior residents and medical students (n=83).
- The competent group comprised senior residents, fellows, and practicing surgeons (n=82).
- The Mann-Whitney U test analyzed performance differences.
Main Results:
- Significant differences in total and individual MISTELS scores were observed between competent and noncompetent surgeons (189 vs 372.5; p <0.0001).
- Established pass/fail thresholds effectively discriminated between the two groups.
Conclusions:
- The MISTELS system allows for objective pass/fail evaluations of laparoscopic surgical skills.
- This provides a validated tool for assessing surgical training and competency.