Is elevated serum homocysteine in isolated ischemic cranial nerve palsies a predictor of stroke?

Table 1 Elevated levels of serum homocysteine in patients with and without systemic illness, n (%)

Age (years)	No systemic illness			With systemic illness
	Elevated	Normal	Fisher's exact test P value	Elevated	Normal	Fisher's exact test P value
> 40	12 (63.2)	7 (36.8)	1.00	20 (50)	20 (50)	1.00
≤ 40	4 (66.7)	2 (33.3)		1 (100)	0
Total	16	9		21	20