Skip to main content
. Author manuscript; available in PMC: 2016 Apr 27.
Published in final edited form as: Vaccine. 2015 May 12;33(27):3114–3121. doi: 10.1016/j.vaccine.2015.04.098

Table 1.

Socio-demographic distribution and influenza vaccination coverage estimates, children 6 months–17 years, National Immunization Survey-Flu (NIS-Flu), 2011–2012 and 2012–2013 influenza seasons.

Socio-demographic characteristics 2011–2012 influenza season
2012–2013 influenza season
n % ± 95% CIa Vaccinated % ± 95% CI n % ± 95% CI Vaccinated % ± 95% CI
VFCb/Insurance status VFC-entitled 25,382 34.2 ± 0.9 52.0 ± 1.9 29,015 37.0 ± 0.8c 56.0 ± 1.6c
 Uninsured 4675 6.6 ± 0.5 38.9 ± 4.7 5707 6.8 ± 0.4 44.8 ± 3.5c
 Medicaid 19,146 26.4 ± 0.8 55.2 ± 2.1 21,608 28.6 ± 0.7c 58.6 ± 1.9c
 American Indian/Alaska Native 3021 2.2 ± 0.2 55.0 ± 7.0 3493 3.1 ± 0.3c 55.5 ± 5.2
Privately insured 58,029 65.8 ± 0.9 50.7 ± 1.2 58,646 63.0 ± 0.8c 57.2 ± 1.2c
Age 6–23 months 9013 10.4 ± 0.5 74.2 ± 3.0 10,288 9.6 ± 0.4c 78.2 ± 2.6c
2–4 years 14,286 16.2 ± 0.6 63.8 ± 2.3 15,491 15.6 ± 0.5 65.6 ± 2.0
5–12 years 40,690 44.6 ± 0.8 54.4 ± 1.4 47,391 45.2 ± 0.7 58.5 ± 1.3c
13–17 years 19,422 28.8 ± 0.8 32.1 ± 2.0 14,491 29.6 ± 0.7 43.3 ± 1.9c
Gender Male 42,964 51.2 ± 0.9 51.6 ± 1.4 45,423 51.2 ± 0.7 56.4 ± 1.3c
Female 40,447 48.8 ± 0.9 50.6 ± 1.5 42,238 48.8 ± 0.7 57.2 ± 1.4c
Race/ethnicity Non-Hispanic, white only 52,384 57.1 ± 0.9 47.2 ± 1.2 53,432 53.4 ± 0.8c 54.1 ± 1.1c
Non-Hispanic, black only 8838 14.9 ± 0.7 53.1 ± 3.1 8820 14.0 ± 0.6 57.3 ± 3.0
Hispanic 13,600 22.2 ± 0.8 59.3 ± 2.8 15,448 23.4 ± 0.8c 60.8 ± 2.5
Non-Hispanic other/multiple races 8589 5.8 ± 0.3 53.2 ± 3.2 9961 9.2 ± 0.4c 61.4 ± 3.0c
Metropolitan statistical area (MSA) MSA, principle city 26,841 32.6 ± 0.9 55.1 ± 2.0 29,451 32.9 ± 0.8 59.6 ± 1.7c
MSA, not principle city 38,017 51.8 ± 0.9 50.3 ± 1.5 38,147 49.9 ± 0.8c 56.5 ± 1.5c
Non-MSA 18,553 15.7 ± 0.5 45.4 ± 2.0 20,063 17.2 ± 0.5c 52.2 ± 1.8c
Annual income/poverty leveld Above poverty, ≥$75,000 32,791 34.9 ± 0.8 50.7 ± 1.5 33,336 33.5 ± 0.7c 59.6 ± 1.5c
Above poverty, <$75,000 31,311 36.0 ± 0.9 46.8 ± 1.7 32,067 35.1 ± 0.8 52.3 ± 1.6c
At or below poverty level 13,709 22.5 ± 0.8 57.2 ± 2.7 15,444 24.1 ± 0.8c 59.6 ± 2.2
Unknown 5600 6.5 ± 0.4 56.0 ± 3.6 6814 7.3 ± 0.4c 56.9 ± 3.3
Regione Northeast 15,364 16.7 ± 0.5 58.3 ± 2.0 17,311 16.4 ± 0.4 66.1 ± 1.9c
Midwest 17,083 21.5 ± 0.5 47.5 ± 1.7 18,083 21.6 ± 0.5 54.0 ± 1.6c
South 32,305 37.6 ± 0.8 50.8 ± 1.7 31,773 37.8 ± 0.7 55.5 ± 1.6c
West 18,659 24.2 ± 0.8 49.8 ± 2.8 20,494 24.2 ± 0.7 54.7 ± 2.5c

n is unweighted sample size.

a

Confidence interval.

b

Vaccines for Children program. The VFC-entitled group consisted of children who were either uninsured, Medicaid eligible, or an American Indian or Alaska Native. Children may fall into more than one of these categories; therefore, the numbers and proportions of children in each of the VFC-entitled subgroups sum to more than the overall number and proportion of VFC-entitled children in the sample.

c

Statistically significant difference compared to the 2011–2012 influenza season estimates.

d

Poverty level was defined based on the reported number of people living in the household and annual household income, and the U.S. Census poverty thresholds.

e

Classification was based on the U.S. Census Bureau’s census region definition.