Table 1. Demographic Information.

Data are provided as number (no.) and percentage (%) of participants unless indicated otherwise. GED, general educational development.

	20 μg of H1ssF	60 μg of H1ssF
	18–40 years (n = 5)	18–40 years (n = 12)	41–49 years (n = 12)	50–59 years (n = 12)	60–70 years (n = 11)	All 60 μg (n = 47)
Sex, no. (%)
Male	1 (20.0)	8 (66.7)	5 (41.7)	5(41.7)	5 (45.5)	23 (48.9)
Female	4 (80.0)	4 (33.3)	7 (58.3)	7 (58.3)	6 (54.5)	24 (51.1)
Age, mean [range]	34.0 [27, 40]	29.2 [22, 38]	45.3 [41,49]	52.8 [50, 57]	63.0 [60, 68]	47.2 [22, 68]
Race, no. (%)*
Asian	0 (0.0)	2 (16.7)	3 (25.0)	0 (0.0)	0 (0.0)	5 (10.6)
Black or African American	0 (0.0)	0 (0.0)	2 (16.7)	2 (16.7)	1 (9.1)	5 (10.6)
White	4 (80.0)	8 (66.7)	7 (58.3)	10 (83.3)	10 (90.9)	35 (74.5)
Multiracial	1 (20.0)	2 (16.7)	0 (0.0)	0 (0.0)	0 (0.0)	2 (4.3)
Hispanic or Latino ethnic group, no. (%)*
Non-Hispanic/Latino	4 (80.0)	9 (75.0)	12 (100.0)	11 (91.7)	11 (100.0)	43 (91.5)
Hispanic/Latino	1 (20.0)	3 (25.0)	0 (0.0)	1 (8.3)	0 (0.0)	4 (8.5)
Body mass index, mean (SD)†	22.8 (2.9)	27.0 (3.5)	27.0 (3.7)	27.6 (3.0)	26.3 (4.3)	27.0 (3.6)
Educational level, no. (%)
High school graduate/GED	1 (20.0)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)	1 (1.9)
College/university	1 (20.0)	7 (58.3)	3 (25.0)	5(41.7)	5 (45.5)	20 (42.6)
Advanced degree	3 (60.0)	5 (41.7)	9 (75.0)	7 (58.3)	6 (54.5)	27 (57.4)

^*Race and ethnic group were reported by the participants.

^†Body mass index is weight in kilograms divided by the square of height in meters.

This calculation was performed on the basis of weight and height measured at the time of enrollment.