Serum high concentrations of homocysteine and low levels of folic acid and vitamin B12 are significantly correlated with the categories of coronary artery diseases

Table 4 The prevalence of high Hcy, low folic acid and vitamin B₁₂ in 292 CAD patients and 100 controls with chest pain patient (%)

	Number	High Hcy (n = 236)	Low folic acid (n = 135)	Low vitamin B₁₂ (n = 117)
Controls	100	5.00	13.00	15.00
Stable angina pectoris	103	66.02	32.04	24.27
Unstable angina pectoris	116	81.90	39.66	34.48
Acute myocardial infarction	73	93.15	58.90	50.68
χ ²		184.51	41.37	28.39
p value		<0.001	<0.001	<0.001