Table 1.

Sample sizes used for assays in this study

Analysis	Age	Analytes	Sample	Horses
				#Affected	#Unaffected
Isoprostane Study A	Repeated samples 1 and 6 mo	F2‐isoprostane and F4‐neuroprostanes	CSF	4	10
Isoprostane Study B	1–4 y	F2‐isoprostane and F4‐neuroprostanes	CSF	17	10
Oxysterol	1–4 y	Cholesterol and oxysterols	Serum	14	12
Oxysterol	1–4 y	Cholesterol and oxysterols	CSF	11	10
Oxysterol	1–4 y	Cholesterol and oxysterols	SC	10	7

For a full list of individual horses, refer to Supporting Information Table S1.

Abbreviations: CSF, cerebrospinal fluid; SC, spinal cord; mo, months; y, years.