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Langenbeck's Archives of Surgery
Published in: Langenbeck's Archives of Surgery 5/2010

01-06-2010 | Original Article

Face, content and construct validity of a new realistic trainer for conventional techniques in digestive surgery

Authors: Jörn Gröne, Johannes C. Lauscher, Heinz J. Buhr, Joerg-Peter Ritz

Published in: Langenbeck's Archives of Surgery | Issue 5/2010

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Abstract

Purpose

Surgical simulation modules for “open” surgery are limited in contrast to well-studied and validated laparoscopic trainers. In this study, face, content and construct validity of a devised simulation module (Berlin Operation Trainer, BOPT) for handsewn anastomoses in digestive surgery were analysed.

Materials and methods

Participants of a skills course for digestive surgery (novices: 1–3 years of training; experts: more than 5 years of training) were timed on performing four defined handsewn digestive anastomoses on formalin fixed porcine intestine in the BOPT. Questionnaires were answered regarding impression with the simulation module concerning appearance and realism using a five-point Likert and a three-point forced choice scale. Face and content validities were evaluated based on the responses of participants and construct validity by comparing novices to experts. Data collected were analysed with Fisher’s exact test and two-sample t test.

Results

Twenty-two novices (median: second postgraduate year) and 26 experts (median: seventh postgraduate year) were enrolled in the study. The BOPT showed strong face and content validities with average scores for satisfaction parameters above 4.2 ± 0.41 and 4.1 ± 0.22, respectively. Construct validity was adequate for anastomosis simulation in the BOPT based on different percentages of anastomosis complete during set time between novices and experts as shown for simple (68.2% vs. 92.3%, p = 0.038) and for difficult anastomosis (18.2% vs. 50.0%, p = 0.021).

Conclusions

The BOPT is a suitable instrument for advanced surgical training for novices and experienced colleagues creating a realistic and demanding situation. Further studies have to evaluate if a more realistic preoperative training will support an effective transfer of learned techniques to the operating room.
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Metadata
Title
Face, content and construct validity of a new realistic trainer for conventional techniques in digestive surgery
Authors
Jörn Gröne
Johannes C. Lauscher
Heinz J. Buhr
Joerg-Peter Ritz
Publication date
01-06-2010
Publisher
Springer-Verlag
Published in
Langenbeck's Archives of Surgery / Issue 5/2010
Print ISSN: 1435-2443
Electronic ISSN: 1435-2451
DOI
https://doi.org/10.1007/s00423-010-0641-2

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