Table 1.

Characteristics of subjects.

	N	Mean	Std. deviation	Minimum	Maximum
Age (years)	72	45.18	11.10	19.00	70.00
BMI (kg/m2)	72	22.50	1.70	18.70	27.60
Clinical onset (months)	72	28.01	17.97	3.00	90.00
Glysine levels (pg/mL)	72	0.53	0.15	0.18	0.87