The incidence of epistaxis in racehorses in South Africa.
In South Africa 2,41% of horses bleed in a race. If all raced until they were 7 years old probably another 2,12% would bleed. Many others bleed after the race or during exercise or at rest. The incidence of epistaxis is significantly greater in geldings than in females and uncastrated males (P less than 0,001). There is an age distribution of bleeding which is highest at 4 years and lowest at 2 years of age (P less than 0,001).
D000367:Age Factors; D000818:Animals; D004844:Epistaxis / Q000453:epidemiology / Q000662:veterinary*; D005260:Female; D006734:Horse Diseases / Q000453:epidemiology*; D006736:Horses; D008297:Male; D012621:Seasons; D012737:Sex Factors; D013019:South Africa