Table 2.

Fasting plasma homocysteine in the three groups.

	BPSD	No BPSD	Control	P value
Numbers (N)	40	37	39
Homocysteine (μmol/L)	22.38 ± 3.89	16.41 ± 3.60	7.98 ± 1.71	0.000*

*Significant difference (P < 0.05).