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. 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 3.

Influenza vaccination coverage by select population characteristics, children 6 months–17 years, National Immunization Survey-Flu (NIS-Flu), 2011–2012 and 2012–2013 influenza seasons.

Population characteristics 2011–2012 influenza season
2012–2013 influenza season
VFCa-entitled
Privately insured
VFC-entitled
Privately insured
n Vaccinated % ± 95% CIb n Vaccinated % ± 95% CI n Vaccinated % ± 95% CI n Vaccinated % ± 95% CI
Age 6–23 months 3365 71.0 ± 5.1 5648 76.4 ± 3.5 3949 73.9 ± 4.5 6339 80.9 ± 3.0c
2–4 years 4917 64.9 ± 4.1 9369 63.2 ± 2.8 5727 62.0 ± 3.3 9764 68.0 ± 2.6c,d
5–12 years 10,930 53.4 ± 2.9 29,760 54.7 ± 1.6 14,511 56.9 ± 2.1 32,880 59.4 ± 1.6d
13–17 years 6170 35.4 ± 3.4 13,252 30.3 ± 2.5c 4828 45.0 ± 3.5d 9663 42.4 ± 2.3d
Gender Male 12,960 52.8 ± 2.6 30,004 51.0 ± 1.7 14,893 54.3 ± 2.2 30,530 57.6 ± 1.6c,d
Female 12,422 51.2 ± 2.8 28,025 50.3 ± 1.8 14,122 57.7 ± 2.4d 28,116 56.9 ± 1.7d
Race/Ethnicity Non-Hispanic, white only 10,136 43.6 ± 2.6 42,248 48.2 ± 1.3c 11,426 48.5 ± 2.2d 42,006 55.7 ± 1.3c,d
Non-Hispanic, black only 4244 55.6 ± 4.2 4594 50.2 ± 4.3 4359 56.2 ± 4.0 4461 58.7 ± 4.4d
Hispanic 7009 58.5 ± 3.8 6591 60.1 ± 4.1 8517 62.1 ± 3.1 6931 59.0 ± 3.9
Non-Hispanic other/multiple races 3993 50.8 ± 4.8 4596 54.9 ± 4.2 4713 57.5 ± 4.0d 5248 64.5 ± 4.2c,d
Metropolitan statistical areas (MSA) MSA, principle city 9390 57.9 ± 3.2 17,451 53.3 ± 2.5c 10,645 58.7 ± 2.6 18,806 60.1 ± 2.2d
MSA, non-principle city 9130 49.3 ± 3.1 28,887 50.8 ± 1.6 10,686 55.5 ± 2.8d 27,461 56.9 ± 1.7d
Non-MSA 6862 46.4 ± 3.2 11,691 44.7 ± 2.4 7684 52.0 ± 2.9d 12,379 52.4 ± 2.4d
Annual income/Poverty levele Above poverty, ≥$75,000 2442 46.0 ± 5.6 30,349 51.0 ± 1.6 2878 51.9 ± 5.0 30,458 60.2 ± 1.6c,d
Above poverty, <$75,000 10,535 46.6 ± 2.9 20,776 46.9 ± 2.0 11,578 53.7 ± 2.6d 20,489 51.4 ± 2.0d
At or below poverty level 10,336 55.9 ± 2.9 3373 60.7 ± 5.6 11,749 58.6 ± 2.4 3695 63.3 ± 5.1
Unknown 2069 58.0 ± 6.6 3531 54.5 ± 4.2 2810 54.5 ± 5.2 4004 58.8 ± 4.2
Regionf Northeast 4104 62.5 ± 4.0 11,260 56.5 ± 2.3c 5039 66.1 ± 3.3 12,272 65.9 ± 2.3d
Midwest 5316 50.3 ± 3.3 11,767 46.0 ± 1.9c 6035 52.3 ± 2.7 12,048 55.0 ± 2.0d
South 10,467 51.3 ± 2.9 21,838 50.6 ± 2.0 11,478 54.9 ± 2.7 20,295 56.0 ± 1.9d
West 5495 47.8 ± 5.6 13,164 50.6 ± 3.1 6463 54.5 ± 4.2 14,031 54.8 ± 3.1

n is unweighted sample size.

a

Vaccines for Children program.

b

Confidence interval.

c

Statistically significant difference compared to the VFC-entitled group in the same influenza season (also bolded).

d

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

e

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.

f

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