Table 2. Study population demographics.

	Group ID1 (n = 47)	Group ID2 (n = 46)	Group A (n = 44)	Group B (n = 43)	Group G (n = 47)	Group H (n = 43)
A/H3N2 antigen per dose (µg)	6	12	15	30	15	30
MF59 per dose (%)	0	0	0	0	100	100
Age (years, SD)	68.3 ± 3.5	69.6 ± 5.1	69.2 ± 3.6	69.2 ± 4.0	68.5 ± 3.1	69.0 ± 3.5
Male (%)	49	48	40	56	42	46
Weight (kg, SD)	78.6 ± 15.5	77.1 ± 10.5	74.8 ± 13.5	77.1 ± 14.7	76.6 ± 14.3	73.0 ± 13.3
Height (cm, SD)	168.4 ± 9.0	167.7 ± 8.2	167.0 ± 8.0	167.0 ± 9.0	167.0 ± 8.0	165.0 ± 10.0
Previously vaccinated (%)	70	74	74	73	76	76
Caucasian (%)	100	100	100	98	100	100
Asian (%)	0	0	0	2	0	0

SD, standard deviation. The demographic data for IM subject groups C, D, E, and F are published elsewhere.³⁶