TABLE 1.

Demographic profiles of the per-protocol cohorts for immunogenicity at month 12

Parameter	Study A			Study B
	H1N1d/AS03	H1N1	Overall	H1N1/AS03	H1N1	Overall
No. of subjects	59	65	124	61	61	122
18–40 yr old	27	32	59	30	29	59
41–60 yr old	32	33	65	31	32	63
Mean age (yr) ± SDa
18–40 yr old	27.2 ± 6.6	25.7 ± 6.6	26.4 ± 6.6	24.0 ± 4.8	26.3 ± 5.7	25.1 ± 5.3
41–60 yr old	51.4 ± 4.7	50.7 ± 5.9	51.0 ± 5.3	50.3 ± 5.0	50.8 ± 6.5	50.5 ± 5.7
18–60 yr old	40.3 ± 13.4	38.4 ± 14.1	39.3 ± 13.7	37.3 ± 14.1	39.1 ± 13.7	38.2 ± 13.9
Gender (% female)	61	60	60.5	67.2	52.5	59.8
Geographic ancestry (%)
Asian	0	1.5	0.8	0	1.6	0.8
Caucasian	100	98.5	99.2	100	98.4	99.2
History of influenza vaccination; n (%)b
18–40 yr old	9 (33.3)	5 (15.6)	14 (23.7)	NAc	NA	NA
41–60 yr old	26 (81.3)	21 (63.6)	47 (72.3)	NA	NA	NA
18–60 yr old	35 (59.3)	26 (40.0)	61 (49.2)	19 (31.1)	16 (26.2)	35 (28.7)

^aReported at the first dose.

^bReported as having received seasonal influenza vaccination at least once during the preceding 3 years.

^cNA, data not available.

^dH1N1, A(H1N1)pdm09 vaccine.