. Author manuscript; available in PMC: 2018 Apr 1.

Published in final edited form as: Am J Prev Med. 2016 Dec 21;52(4):e103–e113. doi: 10.1016/j.amepre.2016.10.040

Table 2. Influenza Vaccination Coverage Among Children 6 Months Through 8 Years, by Characteristics and Dose Recommendations.

Demographic characteristic	2012–2013 influenza season, estimate ^a (±95% CI)		2013–2014 influenza season, estimate (±95% CI)
	≥1 dose ^b	Fully vaccinated ^c	≥1 dose	Fully vaccinated
	Overall	65.9 (1.2)	41.0 (1.1)	67.2 (1.1)	45.2 (1.3)^f
Gender
A. Male	66.1 (1.6)	41.7 (1.6)	66.9 (1.4)	45.1 (1.7)^f
B. Female	65.6 (1.7)	40.4 (1.6)	67.5 (1.7)	45.3 (1.8)^f
Age^d
A. 6–23 months	77.0 (2.3)^g^,^B^,^C	36.8 (2.3)^B^,^C	74.4 (2.0)^B^,^C	39.3 (2.3)^B^,^C
B. 2–4 years	65.9 (1.9)^A^,^C	42.8 (2.1)^A	68.1 (1.8)^A^,^C	45.6 (2.3)^A
C. 5–8 years	61.7 (1.8)^A^,^B	41.3 (1.6)^A	63.9 (1.7)^A^,^B	47.0 (1.8)^f^,^A
Child's race/ethnicity
A. Hispanic	69.0 (2.8)^B^,^C	41.4 (2.8)^B	74.2 (2.9)^f^,^B^,^C	47.9 (3.9)^f^,^B
B. Black, non-Hispanic	63.5 (3.6)^A^,^D	33.9 (3.0)^A^,^C^,^D	63.3 (3.0)^A^,^D	37.8 (3.2)^A^,^C^,^D
C. White, non-Hispanic	64.0 (1.4)^A^,^D	42.5 (1.4)^B	64.2 (1.2)^A^,^D	45.9 (1.2)^f^,^B
D. Other/multiple races, non-Hispanic	69.7 (3.7)^B^,^C	42.5 (3.1)^B	70.9 (2.7)^B^,^C	46.3 (2.9)^B
Mother's education level
A. <12 years	66.7 (4.1)^C	35.5 (3.6)^D	72.5 (4.4)^B^,^C	45.9 (5.4)^f^,^B^,^C^,^D
B. 12 years	63.5 (2.8)^D	36.8 (2.6)^D	64.0 (2.3)^A^,^C^,^D	37.8 (3.2)^A^,^D
C. >12 years, not college graduate	61.4 (2.3)^A^,^D	37.8 (2.3)^D	60.2 (2.1)^A^,^B^,^D	39.5 (2.3)^A^,^D
D. College graduate	69.6 (1.7)^B^,^C	47.9 (1.7)^A^,^B^,^C	71.6 (1.3)^B^,^C	53.2 (1.4)^f^,^A^,^B^,^C
Poverty status^e
A. Above poverty, >$75,000/year	71.2 (1.9)^B^,^C^,^D	49.7 (1.9)^B^,^C^,^D	71.2 (1.4)^B	54.0 (1.6)^f^,^B^,^C^,^D
B. Above poverty, ≤$75,000/year	61.2 (2.0)^A^,^C	38.1 (1.9)^A	62.0 (1.7)^A^,^B^,^D	40.0 (1.7)^A^,^D
C. At or below poverty level	67.0 (2.7)^A^,^B	36.4 (2.5)^A	68.6 (2.8)^B	42.2 (1.9)^f^,^A^,^D
D. Unknown	63.7 (3.9)^A	36.8 (3.6)^A	68.9 (3.7)^B	43.0 (4.1)^f^,^A^,^B^,^C
No. of children <18 in household
A. 1 child	67.9 (2.1)^C	40.1 (2.1)^B	67.6 (1.7)	41.3 (1.8)^B
B. 2 children	67.8 (1.8)^C	44.1 (1.9)^A^,^C	68.5 (1.5)^C	48.2 (1.7)^f^,^A^,^C
C. ≥3 children	61.7 (2.3)^A^,^B	37.8 (2.0)^B	65.6 (2.2)^f^,^B	42.2 (2.6)^f^,^B
Household in MSA
A. MSA, principal city	67.3 (2.0)^C	40.4 (1.9)^B^,^C	69.6 (2.0)^C	45.2 (2.4)^f^,^C
B. MSA, not principal city	66.7 (1.9)^C	43.0 (1.8)^A^,^C	67.8 (1.5)^A^,^C	46.4 (1.7)^f^,^C
C. Non-MSA	60.1 (2.4)^A^,^B	37.0 (2.2)^A^,^B	60.2 (2.3)^A^,^B	40.4 (2.3)^f^,^A^,^B
No. of doses to be fully vaccinated
A. 1 dose	90.6 (1.4)^B	90.6 (1.4)^B	93.2 (1.2)^f^,^B	93.2 (1.2)^f^,^B
B. 2 dose	50.9 (1.6)^A	10.7 (1.0)^A	48.9 (1.3)^A	10.9 (1.2)^A

Source: National Immunization Survey-Flu (NIS-Flu), 2012–2013 and 2013–2014 influenza seasons.

Influenza vaccination coverage estimates were calculated using the Kaplan–Meier survival analysis procedure. For the 2012–2013 season, estimates include vaccinations received from July 2012 through May 2013 and are based on interviews conducted October 2012 through June 2013. For the 2013–2014 season, estimates include vaccinations received from July 2013 through May 2014 and are based on interviews conducted October 2013 through June 2014.

Any (≥1) dose defined as receipt of at least one dose of influenza vaccine.

Fully vaccinated was defined as either (1) receipt of two doses of influenza vaccine for children who were previously unvaccinated or did not receive a total of two or more doses of influenza vaccine from July 1, 2010, to the end of June 2012 for the 2012–2013 influenza seasons or June 2013 for the 2013–2014 influenza season, or (2) receipt of one dose of influenza vaccine otherwise.

Age as of November 1 of the respective influenza season.

Income/poverty level was defined based on total family income in the past calendar year, and the U.S. Census Poverty thresholds for that year specified for the applicable family size and number of children aged <18 years. Poverty thresholds are available at http://www.census.gov/hhes/www/poverty/data/threshld/index.html.

Statistically significant difference compared to the 2012–2013 influenza season estimate.

The presence or absence of capital letters denotes whether that estimate was statically significantly different at p<0.05 from another row, and denotes which row it differed from (A, B, C, D), based on pairwise comparison t-test. For example, the 77.0% of ≥1 dose vaccination coverage estimate of 6–23 months (A) was statistically significantly different from the 65.9% of coverage estimates of 2–4 years (B) and 61.7% of 5–8 years (C) in the 2012–2013 season.

MSA, Metropolitan Statistical Area; No., number.