Table 1.

Demographic information of participants

Demographics		SZ (92)	HC (116)
Sex	Male	70	72
	Female	22	44
Age	Mean ± SD	34 ± 11	32 ± 11
	Range	18–59	18–58
Ethnicity	American Indian or Alaska Native	1	1
	Asian	6	5
	African-American	13	4
	Native Hawaiian or Pacific Islander	0	1
	Caucasian	72	105