Table 1.

Summary of patient demographics (n = 133).

Demographics	Mean ± standard deviation
Mean age (years)	46.1 ± 11.1
Caucasian/African–American/other (%)	64/27/9
Males/females (%)	64/36
Mean plasma folate (ng/ml)	15.6 ± 6.56
Meeting metabolic syndrome criteria (%)	46
Currently receiving an atypical antipsychotic (%)	71
Antipsychotic chlorpromazine equivalents (mg)	381.29 ± 432.49
Current cigarette smokers (%)	58
Total activity level (METs/min)	2340 ± 2347
MTHFR 677C/T genotype, CC/CT/TT (%)	61/30/9
COMT 158Val/Met genotype, ValVal/ValMet/MetMet (%)	30/50/20

MET: Metabolic equivalent of task.