Table 1.

Data of the horses that were included in the study (n = 53).

	Patients	Controls
Total number	26	27
Mares	15	14
Geldings	11	13
Warmbloods	17	9
Thoroughbreds	2	0
Draft Horses	5	8
Ponies	2	9
Trotters	0	1
Mean age (S.D.)	28.2 (2.8)	27.2 (3.4)

S.D. = standard deviation. Age was not significantly different between patients and control animals (p = 0.2).