A comparison of two scoring systems for endoscopic grading of gastric ulceration in horses.
OBJECTIVE
To compare two scoring systems for grading gastric ulcers in adult horses.


METHODS
Digitised recordings of gastroscopy examinations of 22 horses that were part of a study on prevalence of gastric ulceration in racehorses in New Zealand were reviewed independently by three examiners. All stomachs were graded by each examiner using two different grading systems, the Equine Gastric Ulcer Council (EGUC) system and the Number/Severity (N/S) system.


RESULTS
All examiners commented that the EGUC system was quicker and easier to use. There was no significant difference between examiners in the grades assigned using the EGUC system (p=0.31) and the agreement between examiners was high (Kappa values of 0. 85(1vs2), 0.88(1vs3) and 0.80(2vs3)). There was a significant difference between examiners in the grades assigned using the severity component of the N/S system (p=0.005).


CONCLUSIONS
The EGUC system was more repeatable, and was faster and easier to use than the N/S system.


CONCLUSIONS
The EGUC system is suitable as a standard scoring system due to its ease of use, and the repeatability and correlation of grades assigned between independent examiners. Use of a standard scoring system will more easily allow comparisons to be made between different research groups and clinicians.
Bell
R J W
RJ
Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Private Bag 11222, Palmerston North, New Zealand. robinjw@gmail.com
Kingston
J K
JK
Mogg
T D
TD
D000818:Animals; D005260:Female; D005773:Gastroscopy / Q000379:methods / Q000662:veterinary*; D006734:Horse Diseases / Q000453:epidemiology / Q000473:pathology*; D006736:Horses; D008297:Male; D009520:New Zealand / Q000453:epidemiology; D015588:Observer Variation; D012720:Severity of Illness Index; D013270:Stomach / Q000473:pathology*; D013276:Stomach Ulcer / Q000453:epidemiology / Q000473:pathology / Q000662:veterinary*