Table 1.
Demographics
| 2010–2011 Influenza Season |
2011–2012 Influenza Season |
All (N = 243) |
|||||
|---|---|---|---|---|---|---|---|
| Naive Cohort 0.25 mL TIV (N = 23) |
Naive Cohort 0.5 mL TIV (N = 44) |
Fully Primed Cohort 0.25 mL TIV (N = 9) |
Fully Primed Cohort 0.5 mL TIV (N = 23) |
Naive Cohort 0.25 mL TIV (N = 48) |
Naive Cohort 0.5 mL TIV (N = 96) |
||
| Gender, n (%) | |||||||
| Male | 14 (61) | 18 (41) | 3 (33) | 13 (57) | 21 (44) | 48 (50) | 117 (48) |
| Female | 9 (39) | 26 (59) | 6 (67) | 10 (43) | 27 (56) | 48 (50) | 126 (52) |
| Ethnicity, n (%) | |||||||
| Non-Hispanic | 23 (100) | 43 (98) | 9 (100) | 23 (100) | 45 (94) | 94 (98) | 237 (98) |
| Hispanic | 0 | 1 (2) | 0 | 0 | 3 (6) | 2 (2) | 6 (2) |
| Race, n (%) | |||||||
| Asian | 0 | 0 | 0 | 0 | 0 | 2 (2) | 2 (1) |
| African American | 7 (30) | 11 (25) | 1 (11) | 1 (4) | 18 (38) | 26 (27) | 64 (26) |
| White | 14 (61) | 30 (68) | 8 (89) | 20 (87) | 29 (60) | 62 (65) | 163 (67) |
| Multiracial | 2 (9) | 3 (7) | 0 | 2 (9) | 0 | 6 (6) | 13 (5) |
| Other/unknown | 0 | 0 | 0 | 0 | 1 (2) | 0 | 1 (0) |
| Age (months) | |||||||
| Mean (standard deviation) | 13.1 (6.4) | 16.4 (8.6) | 23.4 (6.4) | 25.3 (5.8) | 11.8 (5.6) | 11.1 (5.0) | 14.2 (7.6) |
| Median | 10.7 | 13.8 | 21.2 | 24.4 | 9.9 | 9.4 | 10.8 |
| Min, max | (7.5, 34.9) | (6.3, 34.8) | (15.6, 33.7) | (15.9, 34.0) | (6.0, 28.9) | (6.2, 29.0) | (6.0, 34.9) |
Abbreviations: TIV, trivalent inactivated influenza vaccine.