TABLE 2

Influenza Vaccination Coverage Levels Among Children Aged 6 to 23 Months According to Demographic Characteristics

Demographic Characteristic2002–2003 Influenza Seasona2003–2004 Influenza Seasonb
1+FLUcFully Vaccinatedd1+FLUeFully Vaccinatedf
% (±95% CI Half-width)P% (±95% CI Half-width)P% (±95% CI Half-width)P% (±95% CI Half-width)P
Overall7.4 (±0.7)4.4 (±0.5)17.5 (±1.1)8.4 (±0.8)
Child's race/ethnicity<.01<.01<.01<.01
    Hispanic5.8 (±1.3)2.8 (±1.0)13.4 (±2.1)5.0 (±1.2)
    White, non-Hispanic8.5 (±0.8)5.4 (±0.6)20.6 (±1.5)11.1 (±1.1)
    Black, non-Hispanic4.8 (±1.5)2.5 (±1.1)11.3 (±3.0)4.4 (±1.9)
    Asian, non-Hispanic12.1 (±5.0)8.8 (±4.7)25.9 (±6.6)11.7 (±5.6)
    American Indian/Alaska Native and other, non-Hispanic3.6 (±2.6)2.1 (±2.2)20.9 (±8.4)6.6 (±3.9)
First born<.01<.01<.01<.01
    No6.3 (±0.8)3.5 (±0.6)16.1 (±1.4)7.3 (±0.9)
    Yes9.1 (±1.1)5.8 (±0.9)20.0 (±1.8)10.4 (±1.4)
Gender.96.98.72.70
    Male7.4 (±0.9)4.4 (±0.7)17.7 (±1.6)8.6 (±1.1)
    Female7.4 (±1.0)4.4 (±0.8)17.3 (±1.5)8.3 (±1.1)
Poverty statusg<.01<.01<.01<.01
    Above, more than $75 000/y14.1 (±2.0)9.8 (±1.7)28.6 (±2.7)15.9 (±2.1)
    Above, $75 000/y or less7.1 (±0.9)3.8 (±0.6)17.0 (±1.5)8.2 (±1.1)
    Below4.6 (±1.4)2.6 (±1.2)12.6 (±2.2)4.3 (±1.4)
    Unknown6.0 (±1.8)3.6 (±1.4)15.5 (±3.4)8.0 (±2.7)
Child's age at start of the influenza season<.01.10<.01.29
    6–11 mo8.1 (±1.3)4.8 (±1.1)20.5 (±2.4)9.5 (±1.8)
    12–16 mo7.9 (±1.0)4.7 (±0.8)17.8 (±1.6)8.3 (±1.1)
    17–20 mo5.6 (±1.1)3.6 (±0.9)14.1 (±1.8)7.7 (±1.4)
Mother's education level<.01<.01<.01<.01
    <12 y4.9 (±1.4)1.9 (±0.8)11.6 (±2.4)3.9 (±1.6)
    12 y5.7 (±1.2)3.3 (±1.0)16.1 (±2.1)7.0 (±1.4)
    >12 y, non–college graduate7.7 (±1.5)4.6 (±1.2)15.7 (±2.2)7.8 (±1.7)
    College graduate11.4 (±1.2)7.9 (±1.1)26.1 (±1.9)14.7 (±1.6)
Mother's marital status<.01<.01<.01<.01
Widowed/divorced/separated4.5 (±1.6)2.1 (±1.2)11.8 (±3.2)3.7 (±1.8)
    Never married6.3 (±1.5)2.7 (±0.9)13.5 (±2.2)4.5 (±1.1)
    Married8.1 (±0.8)5.3 (±0.7)19.6 (±1.4)10.3 (±1.0)
Mother's age<.01<.01<.01<.01
    ≤19 y6.6 (±4.6)1.5 (±1.4)14.4 (±7.4)3.6 (±2.9)
    20–29 y6.3 (±1.0)3.5 (±0.8)14.4 (±1.6)6.1 (±1.1)
    ≥30 y8.4 (±0.9)5.4 (±0.7)20.7 (±1.5)11.0 (±1.2)
Shot card used.69.99.77.41
    Yes7.2 (±0.9)4.4 (±0.7)17.7 (±1.8)8.9 (±1.4)
    No7.5 (±0.9)4.4 (±0.7)17.4 (±1.4)8.2 (±0.9)
Census region<.01<.01.06.01
    Northeast7.8 (±1.5)5.0 (±1.2)20.8 (±2.7)10.0 (±1.9)
    Midwest9.2 (±1.4)5.4 (±1.0)17.6 (±2.1)9.8 (±1.6)
    South6.1 (±0.9)3.3 (±0.6)16.4 (±1.8)7.0 (±1.1)
    West7.4 (±1.6)4.9 (±1.4)16.8 (±2.5)8.3 (±1.9)
MSA.01<.01<.01<.01
    MSA, central city7.4 (±1.0)4.3 (±0.8)15.9 (±1.6)7.2 (±1.0)
    MSA, noncentral city8.1 (±1.1)5.1 (±0.9)20.6 (±1.9)10.3 (±1.4)
    Non-MSA5.5 (±1.3)2.8 (±0.8)13.1 (±1.9)6.3 (±1.4)
No. of children <18 y old in household<.01<.01<.01<.01
    19.5 (±1.3)5.7 (±1.0)20.8 (±2.1)11.2 (±1.7)
    2–37.3 (±0.9)4.4 (±0.7)17.2 (±1.4)7.9 (±1.0)
    ≥43.8 (±1.4)1.9 (±1.1)12.7 (±2.9)5.3 (±1.8)
Provider facility type<.01<.01<.01<.01
    All public3.2 (±1.2)1.8 (±1.0)10.3 (±2.4)4.0 (±1.4)
    All hospitals6.9 (±2.1)3.1 (±1.4)18.6 (±3.7)6.3 (±1.9)
    All private8.8 (±0.9)5.5 (±0.7)20.3 (±1.5)10.2 (±1.1)
    Other, mixed, unknown6.2 (±1.6)3.5 (±1.2)13.9 (±2.5)7.2 (±2.0)
Moved from a different stateh<.01<.01.06.04
    Moved4.9 (±1.7)2.7 (1.2)14.0 (±3.7)5.8 (±2.6)
    Did not move7.6 (±0.7)4.6 (0.5)17.8 (±1.1)8.7 (±0.8)
4:3:1:3:3<.01<.01<.01<.01
    UTD8.7 (±0.8)5.3 (±0.6)19.7 (±1.3)9.8 (±0.9)
    Not UTD2.7 (±0.8)1.1 (±0.5)8.9 (±1.7)3.2 (±1.1)
  • a Influenza vaccination coverage measures for the 2002–2003 influenza season are based on data from the 2003 NIS and represent a subset of children included in the NIS. Only those who were between the ages of 6 and 23 months for the entire period of September 1, 2002, to December 31, 2002, are included in the influenza vaccination coverage measures (n = 13831 [unweighted]).

  • b Influenza vaccination coverage measures for the 2003–2004 influenza season are based on data from the 2004 NIS and represent a subset of children included in the NIS. Only those who were between the ages of 6 and 23 months for the entire period of September 1, 2003, to December 31, 2003, are included in the influenza vaccination coverage measures (n = 13881 [unweighted]).

  • c Receipt of ≥1 influenza vaccination between September 1, 2002, and December 31, 2002.

  • d Children were considered fully vaccinated if they had (1) received no doses of influenza vaccine before September 1, 2002, but then received 2 doses between September 1, 2002, and either the date of interview or January 31, 2003, or (2) received at least 1 dose of influenza vaccine before September 1, 2002, and then received at least 1 between September 1, 2002, and December 31, 2002.

  • e Receipt of ≥1 influenza vaccination between September 1, 2003, and December 31, 2003.

  • f Children were considered fully vaccinated if they had (1) received no doses of influenza vaccine before September 1, 2003, but then received 2 doses between September 1, 2003, and either the date of interview or January 31, 2004, or (2) received at least 1 dose of influenza vaccine before September 1, 2003, and then received at least 1 between September 1, 2003, and December 31, 2003.

  • g Defined using US Census Bureau poverty thresholds.

  • h Unknown responses were excluded (n = 39 for 2002–2003 and n = 25 for 2003–2004).