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Construct validity of the ovine model in endoscopic sinus surgery training.
Laryngoscope. 2015 Mar; 125(3):539-43.L

Abstract

OBJECTIVES/HYPOTHESIS

To demonstrate construct validity of the ovine model as a tool for training in endoscopic sinus surgery (ESS).

STUDY DESIGN

Prospective, cross-sectional evaluation study.

METHODS

Over 18 consecutive months, trainees and experts were evaluated in their ability to perform a range of tasks (based on previous face validation and descriptive studies conducted by the same group) relating to ESS on the sheep-head model. Anonymized randomized video recordings of the above were assessed by two independent and blinded assessors. A validated assessment tool utilizing a five-point Likert scale was employed. Construct validity was calculated by comparing scores across training levels and experts using mean and interquartile range of global and task-specific scores. Subgroup analysis of the intermediate group ascertained previous experience. Nonparametric descriptive statistics were used, and analysis was carried out using SPSS version 21 (IBM, Armonk, NY).

RESULTS

Reliability of the assessment tool was confirmed. The model discriminated well between different levels of expertise in global and task-specific scores. A positive correlation was noted between year in training and both global and task-specific scores (P < .001). Experience of the intermediate group was variable, and the number of ESS procedures performed under supervision had the highest impact on performance.

CONCLUSIONS

This study describes an alternative model for ESS training and assessment. It is also the first to demonstrate construct validity of the sheep-head model for ESS training.

Authors+Show Affiliations

Department of Surgery and Cancer , Imperial College, London; Department of Otolaryngology , St. Mary's Hospital, Imperial College Healthcare NHS Trust, London, United Kingdom.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

25200556

Citation

Awad, Zaid, et al. "Construct Validity of the Ovine Model in Endoscopic Sinus Surgery Training." The Laryngoscope, vol. 125, no. 3, 2015, pp. 539-43.
Awad Z, Taghi A, Sethukumar P, et al. Construct validity of the ovine model in endoscopic sinus surgery training. Laryngoscope. 2015;125(3):539-43.
Awad, Z., Taghi, A., Sethukumar, P., & Tolley, N. S. (2015). Construct validity of the ovine model in endoscopic sinus surgery training. The Laryngoscope, 125(3), 539-43. https://doi.org/10.1002/lary.24927
Awad Z, et al. Construct Validity of the Ovine Model in Endoscopic Sinus Surgery Training. Laryngoscope. 2015;125(3):539-43. PubMed PMID: 25200556.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Construct validity of the ovine model in endoscopic sinus surgery training. AU - Awad,Zaid, AU - Taghi,Ali, AU - Sethukumar,Priya, AU - Tolley,Neil S, Y1 - 2014/09/08/ PY - 2014/07/18/received PY - 2014/08/15/revised PY - 2014/08/20/accepted PY - 2014/9/10/entrez PY - 2014/9/10/pubmed PY - 2015/4/15/medline KW - Assessment KW - formative feedback KW - in-training KW - operative competency KW - sinus surgery KW - surgical skills SP - 539 EP - 43 JF - The Laryngoscope JO - Laryngoscope VL - 125 IS - 3 N2 - OBJECTIVES/HYPOTHESIS: To demonstrate construct validity of the ovine model as a tool for training in endoscopic sinus surgery (ESS). STUDY DESIGN: Prospective, cross-sectional evaluation study. METHODS: Over 18 consecutive months, trainees and experts were evaluated in their ability to perform a range of tasks (based on previous face validation and descriptive studies conducted by the same group) relating to ESS on the sheep-head model. Anonymized randomized video recordings of the above were assessed by two independent and blinded assessors. A validated assessment tool utilizing a five-point Likert scale was employed. Construct validity was calculated by comparing scores across training levels and experts using mean and interquartile range of global and task-specific scores. Subgroup analysis of the intermediate group ascertained previous experience. Nonparametric descriptive statistics were used, and analysis was carried out using SPSS version 21 (IBM, Armonk, NY). RESULTS: Reliability of the assessment tool was confirmed. The model discriminated well between different levels of expertise in global and task-specific scores. A positive correlation was noted between year in training and both global and task-specific scores (P < .001). Experience of the intermediate group was variable, and the number of ESS procedures performed under supervision had the highest impact on performance. CONCLUSIONS: This study describes an alternative model for ESS training and assessment. It is also the first to demonstrate construct validity of the sheep-head model for ESS training. SN - 1531-4995 UR - https://www.unboundmedicine.com/medline/citation/25200556/Construct_validity_of_the_ovine_model_in_endoscopic_sinus_surgery_training_ DB - PRIME DP - Unbound Medicine ER -