Table 1.

Features of participants on enrollment

	Amitriptyline (N=30)	SAMe/betaine (N=30)
Sex (males/females)	16/14	15/15
Female age (years)	46.2±14.4	47.7±14.7
Male age (years)	53.9±15.9	46.0±17.6
Months from diagnosis	2.2±0.3	1.9±0.2

Note: All values are expressed as median ± standard deviation.

Abbreviation: SAMe, S-adenosyl-L-methionine.