Interobserver and intraobserver reliability for 2 grading systems for gastric ulcer syndrome in horses
| Autor: | Josephine N Hale, Danielle E. Crosby, Jessica C Wise, Gang Xie, Edwina Wilkes, Sharanne Raidal, Kristopher Hughes |
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| Rok vydání: | 2020 |
| Předmět: |
medicine.medical_specialty
Interobserver reliability 040301 veterinary sciences Visual analogue scale Intraclass correlation Standard Article 030204 cardiovascular system & hematology 0403 veterinary science 03 medical and health sciences 0302 clinical medicine Gastroscopy Equine gastric ulcer syndrome Animals Humans Medicine Horses Stomach Ulcer Grading (education) Observer Variation reliability General Veterinary business.industry Intraobserver reliability Gastroenterology Reproducibility of Results 04 agricultural and veterinary sciences Standard Articles grading systems Confidence interval horse EQUINE Horse Diseases Radiology EGUS VAS business |
| Zdroj: | Journal of Veterinary Internal Medicine |
| ISSN: | 1939-1676 0891-6640 |
| Popis: | Background Grading of equine gastric ulcer syndrome (EGUS) is undertaken in clinical and research settings, but the reliability of EGUS grading systems is poorly understood. Hypothesis/objectives Investigate interobserver and intraobserver reliability of an established ordinal grading system and a novel visual analog scale (VAS), and assess the influence of observer experience. Animals Sixty deidentified gastroscopy videos. Methods Six observers (3 specialists and 3 residents) graded videos using the EGUS Council (EGUC) system and VAS. Observers graded the videos three 3 for each system, using a cross-over design with at least 1 week between each phase. The order of videos was randomized for each phase. Methods Interobserver and intraobserver reliability were estimated using Gwet's agreement coefficient with ordinal weights applied (AC2) for the EGUC system and the intraclass correlation coefficient (ICC) for the VAS. Results Using the EGUC system, interobserver reliability was substantial for squamous (AC2 = 0.69; 95% confidence interval [CI], 0.57-0.80) and glandular mucosa (AC2 = 0.72; 95% CI, 0.70-0.75), and intraobserver reliability was substantial for squamous (AC2 = 0.80; 95% CI, 0.71-0.90) and glandular mucosa (AC2 = 0.80; 95% CI, 0.74-0.86). Interobserver reliability using the VAS was moderate for squamous (ICC = 0.64; 95% CI, 0.31-0.96) and poor for glandular mucosa (ICC = 0.35; 95% CI, 0.06-0.64), and intraobserver reliability was moderate for squamous (ICC = 0.74; 95% CI, 0.62-0.86) and glandular mucosa (ICC = 0.56; 95% CI, 0.39-0.72). Conclusions and clinical importance The EGUC system had acceptable intraobserver and interobserver reliability and performed well regardless of observer experience. Familiarity and observer experience improved reliability of the VAS. |
| Databáze: | OpenAIRE |
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