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 2 Comparison of Hcy, folic acid and vitamin B₁₂ between AMI, UAP, SAP patients and controlled group with chest pain patients

Groups	Number	Hcy (μmol/L)	Folic acid (nmol/L)	Vitamin B₁₂ (pmol/L)
Controls	100	10.81 ± 4.62	12.86 ± 5.85	222.34 ± 62.58
Stable angina pectoris	103	18.63 ± 6.73^a	10.33 ± 4.95^b	167.52 ± 56.25^b
Unstable angina pectoris	116	22.62 ± 6.37^ac	9.21 ± 4.38^bd	148.65 ± 62.51^bd
Acute myocardial infarction	73	23.44 ± 5.78^ac	7.08 ± 3.43^bde	144.57 ± 52.24^bd
F		90.51	22.05	35.63
p value		<0.001	<0.001	<0.001

^aSignificantly increased compared to controls, ^bSignificantly decreased compared to controls, ^cSignificantly increased compared to SAP group, ^dSignificantly decreased compared to SAP group, ^eSignificantly decreased compared to UAP group

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