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. Author manuscript; available in PMC: 2019 Jun 7.
Published in final edited form as: Vaccine. 2018 Jun 7;36(24):3486–3497. doi: 10.1016/j.vaccine.2018.04.077

Table 4.

Association of parental receipt of a provider recommendation for their child to receive influenza vaccination with sociodemographic characteristics among children 6 months–17 years who had a provider visit since July 1st during the influenza season, United States, National Immunization Survey-Influenza (NIS-Flu), 2013–14 through 2015–16 influenza seasons


Characteristics
2013–14 influenza season 2014–15 influenza season 2015–16 influenza season

APR* ± 95% CI AP % APR ± 95% CI AP % APR ± 95% CI AP %

Child’s age
 6–23 months 1.37 (1.25–1.51) 79.3 (74.6–83.3) 1.28 (1.22–1.34) 81.3 (78.7–83.6) 1.31 (1.25–1.37) 80.8 (78.3–83.1)
 2–4 years 1.37 (1.25–1.49) 78.9 (74.9–82.5) 1.22 (1.17–1.29) 78.0 (75.4–80.4) 1.23 (1.16–1.29) 75.7 (72.6–78.6)
 5–12 years 1.24 (1.14–1.34) 71.5 (68.5–74.2) 1.13 (1.08–1.18) 72.2 (70.5–73.9) 1.17 (1.11–1.22) 72.0 (70.2–73.8)
 13–17 years Referent 57.8 (53.3–62.2) Referent 63.7 (61.3–66.1) Referent 61.8 (59.4–64.2)
Child’s sex
 Male 1.01 (0.95–1.07) 69.5 (66.5–72.4) 1.00 (0.97–1.03) 71.5 (69.9–73.1) 0.97 (0.94–1.00) 69.3 (67.5–71.0)
 Female Referent 69.0 (65.9–71.9) Referent 71.6 (69.8–73.2) Referent 71.5 (69.8–73.2)
Child’s race/ethnicity§
 White, non-Hispanic Referent 69.1 (66.6–71.5) Referent 71.1 (69.4–72.7) Referent 69.1 (67.4–70.8)
 Black, non-Hispanic 1.07 (0.99–1.15) 73.9 (68.7–78.5) 1.04 (0.99–1.09) 73.9 (70.8–76.8) 1.05 (1.00–1.10) 72.3 (69.2–75.3)
 Hispanic 0.96 (0.86–1.08) 66.7 (59.4–73.3) 0.99 (0.94–1.05) 70.5 (67.0–73.8) 1.05 (0.99–1.11) 72.3 (68.6–75.7)
 Other, non-Hispanic 0.99 (0.89–1.10) 68.2 (60.7–74.8) 1.03 (0.98–1.09) 73.2 (69.5–76.7) 1.02 (0.95–1.09) 70.5 (65.8–74.9)
Language survey completed
 English Referent 67.6 (64.7–70.4) Referent 70.2 (68.7–71.5) Referent 69.9 (68.5–71.4)
 Spanish 1.23 (1.11–1.36) 83.0 (75.2–88.6) 1.17 (1.11–1.24) 82.4 (78.0–86.0) 1.09 (1.00–1.18) 75.9 (69.8–81.1)
 Other language 0.96 (0.79–1.17) 64.7 (51.5–76.0) 0.97 (0.83–1.13) 68.0 (56.6–77.5) 0.97 (0.81–1.15) 67.8 (55.2–78.2)
Mother’s education
 <High school Referent 66.9 (59.3–73.7) Referent 70.6 (66.2–74.6) Referent 70.1 (65.6–74.4)
 High school or equivalent 0.99 (0.86–1.13) 66.1 (60.8–71.0) 0.97 (0.90–1.04) 68.5 (65.4–71.4) 0.97 (0.90–1.04) 67.7 (64.6–70.7)
 Some college 1.05 (0.93–1.18) 70.0 (66.7–73.0) 0.99 (0.92–1.06) 69.8 (67.4–72.0) 0.96 (0.89–1.03) 67.3 (64.8–69.8)
 ≥College degree 1.06 (0.94–1.20) 71.0 (67.3–74.3) 1.05 (0.98–1.13) 74.4 (72.5–76.2) 1.04 (0.97–1.12) 73.3 (71.4–75.1)
Poverty/annual household income||
 Above poverty (>$75,000) 1.19 (1.07–1.32) 73.9 (70.8–76.7) 1.09 (1.03–1.15) 75.5 (73.6–77.4) 1.06 (1.00–1.13) 72.0 (69.9–73.9)
 Above poverty (≤$75,000) 1.12 (1.01–1.24) 69.4 (65.9–72.7) 1.00 (0.95–1.06) 69.7 (67.5–71.7) 1.04 (0.98–1.10) 70.4 (68.2–72.6)
 Below poverty Referent 62.1 (55.9–67.9) Referent 69.4 (66.1–72.5) Referent 67.6 (64.2–70.8)
 Unknown 1.06 (0.93–1.21) 66.0 (59.7–71.7) 0.97 (0.89–1.04) 67.0 (62.7–71.0) 1.03 (0.95–1.10) 69.4 (65.4–73.1)
Number of children in household
 1 Referent 62.5 (58.9–66.0) Referent 69.0 (67.2–70.8) Referent 66.8 (64.5–69.0)
 2–3 1.14 (1.07–1.21) 71.3 (68.3–74.0) 1.06 (1.02–1.10) 73.1 (71.5–74.7) 1.06 (1.02–1.11) 71.1 (69.4–72.7)
 ≥4 1.17 (1.07–1.27) 72.9 (67.8–77.5) 1.00 (0.94–1.07) 69.2 (65.1–73.0) 1.12 (1.06–1.19) 74.8 (71.0–78.2)
Urban-rural residence
 Urban (MSA, principal city) 1.00 (0.91–1.08) 67.7 (63.7–71.4) 1.11 (1.05–1.18) 73.3 (70.9–75.5) 1.12 (1.06–1.18) 73.3 (71.0–75.5)
 Suburban (MSA, not principal city) 1.03 (0.96–1.11) 70.2 (67.2–73.1) 1.10 (1.04–1.16) 72.2 (70.6–73.7) 1.07 (1.02–1.13) 70.3 (68.6–72.0)
 Rural (non-MSA) Referent 68.0 (63.4–72.3) Referent 65.8 (62.4–69.0) Referent 65.6 (62.5–68.6)
Region of residence
 Northeast 1.10 (1.02–1.18) 73.1 (68.8–77.0) 1.09 (1.05–1.14) 76.7 (74.1–79.1) 1.11 (1.07–1.16) 75.9 (73.6–78.1)
 Midwest 1.02 (0.95–1.10) 68.0 (64.2–71.7) 1.02 (0.98–1.06) 71.4 (69.2–73.4) 1.05 (1.01–1.09) 71.8 (69.7–73.8)
 South Referent 66.5 (62.9–70.0) Referent 70.1 (68.3–71.9) Referent 68.1 (66.3–69.9)
 West 1.08 (1.00–1.17) 72.0 (67.7–75.9) 1.00 (0.95–1.05) 70.3 (67.1–73.3) 1.01 (0.95–1.07) 68.7 (64.9–72.2)
*

APR = adjusted prevalence ratio. Estimates in bold are statistically significantly different from the referent (P < 0.05). All variables listed in the table were included in the model.

CI = confidence interval.

AP = adjusted prevalence.

§

Race/ethnicity is based on parental report. Children of Hispanic ethnicity may be of any race. Children categorized as white, black, or other were identified as non-Hispanic. The other race category included children of reported Asian, American Indian or Alaska Native, Native Hawaiian or other Pacific Islander, other, or multiple (i.e. selected more than one race category) races.

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Poverty level was defined based on the reported number of people living in the household and annual household income, according to the U.S. Census poverty thresholds (https://www.census.gov/data/tables/time-series/demo/income-poverty/historical-poverty-thresholds.html).

MSA = metropolitan statistical area. MSA was based on parent/guardian respondent-reported city, state, county, and zip code of residence using the (https://www.census.gov/programs-surveys/metro-micro.html) MSA definitions file.