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. Author manuscript; available in PMC: 2020 Apr 1.
Published in final edited form as: Am J Prev Med. 2019 Aug 29;57(4):458–469. doi: 10.1016/j.amepre.2019.04.007

Table 4.

Multivariable logistic regression analyses of persons ≥18 years who received influenza vaccination, 2015-2016 influenza season

Characteristic Adjusted coverage % (95% CI) a Prevalence ratio (95% CI) b
Age and race/ethnicity
18-49
Non-Hispanic White 34.0 (32.4-35.6) Reference
Non-Hispanic Black 33.7 (30.6-37.0) 0.99 (0.90-1.10)
Hispanic 34.1 (31.2-37.1) 1.00 (0.91-1.10)
Asian 47.8 (41.5-54.1) 1.40 (1.22-1.62) c
Other 32.8 (27.0-39.3) 0.97 (0.79-1.17)
50-64
Non-Hispanic White 42.1 (40.2-44.0) Reference
Non-Hispanic Black 38.4 (34.1-42.9) 0.91 (0.81-1.03)
Hispanic 38.9 (34.3-43.7) 0.92 (0.82-1.05)
Asian 53.7 (44.4-62.7) 1.28 (1.07-1.53) c
Other 52.3 (42.2-62.2) 1.24 (1.02-1.52)
 ≥65
Non-Hispanic White 59.5 (57.3-61.6) Reference
Non-Hispanic Black 53.4 (48.5-58.1) 0.90 (0.82-0.98) c
Hispanic 49.4 (43.8-54.9) 0.83 (0.74-0.93) c
Asian 64.7 (55.9-72.7) 1.09 (0.95-1.25)
Other 59.3 (47.6-69.9) 1.00 (0.82-1.21)
Sex
Male 42.0 (40.8-43.2) 0.99 (0.96-1.03)
Female 42.2 (41.1-43.4) Reference
Marital status
Married 44.3 (43.1-45.4) 1.14 (1.09-1.20) c
Widowed/divorced/separated 40.8 (39.2-42.4) 1.05 (1.00-1.12)
Never married 38.7 (37.1-40.4) Reference
Education and race/ethnicity
High school or less
Non-Hispanic White 37.4 (35.7-39.1) Reference
Non-Hispanic Black 36.6 (33.2-40.1) 0.98 (0.88-1.08)
Hispanic 38.9 (35.8-42.0) 1.04 (0.95-1.14)
Asian 49.0 (40.5-57.5) 1.31 (1.09-1.57) c
Other 37.8 (30.5-45.7) 1.01 (0.82-1.24)
Some college or college graduate
Non-Hispanic White 41.4 (40.0-42.8) Reference
Non-Hispanic Black 38.0 (34.9-41.1) 0.92 (0.84-1.00) c
Hispanic 37.3 (33.9-40.8) 0.90 (0.82-0.99) c
Asian 54.4 (48.7-60.1) 1.31 (1.18-1.47) c
Other 47.5 (40.8-54.3) 1.15 (0.99-1.33)
Above college graduate
Non-Hispanic White 52.1 (49.6-54.6) Reference
Non-Hispanic Black 50.2 (42.9-57.4) 0.96 (0.83-1.12)
Hispanic 42.8 (34.4-51.5) 0.82 (0.67-1.01) c
Asian 54.9 (47.1-62.5) 1.05 (0.91-1.22)
Other 42.4 (30.2-55.5) 0.81 (0.59-1.11)
Employment status
Employed 40.6 (39.5-41.7) Reference
Not employed 44.5 (43.1-45.9) 1.10 (1.05-1.14) c
Poverty level
At or above poverty 42.3 (41.3-43.3) 1.04 (0.99-1.10)
Below poverty 40.7 (38.6-42.7) Reference
Region
Northeast 42.9 (40.7-45.2) Reference
Midwest 41.7 (40.2-43.2) 0.97 (0.91-1.03)
South 41.8 (40.4-43.3) 0.97 (0.92-1.03)
West 42.3 (40.7-44.0) 0.99 (0.93-1.05)
US born status and race/ethnicity
U.S. born
Non-Hispanic White 42.7 (41.7-43.8) Reference
Non-Hispanic Black 38.0 (35.7-40.3) 0.89 (0.83-0.95) c
Hispanic 38.6 (35.8-41.6) 0.90 (0.84-0.98) c
Asian 53.7 (46.9-60.3) 1.26 (1.11-1.43) c
Other 41.8 (36.8-47.0) 0.98 (0.86-1.11)
Born outside U.S.-- In U.S. < 10 yrs
Non-Hispanic White 31.8 (21.7-43.9) Reference
Non-Hispanic Black 53.1 (42.2-63.7) 1.67 (1.11-2.52) c
Hispanic 39.1 (31.9-46.8) 1.23 (0.82-1.84)
Asian 41.9 (34.8-49.4) 1.32 (0.88-1.98)
Other 43.2 (19.2-70.9) 1.36 (0.64-2.87)
Born outside U.S.-- In U.S. ≥ 10 yrs
Non-Hispanic White 34.9 (30.4-39.7) Reference
Non-Hispanic Black 41.8 (33.2-50.9) 1.20 (0.93-1.54)
Hispanic 37.9 (34.6-41.3) 1.09 (0.93-1.27)
Asian 48.4 (43.7-53.1) 1.39 (1.18-1.63) c
Other 52.3 (37.0-67.1) 1.50 (1.09-2.06) c
Physician contacts within past year
None 28.9 (26.9-31.1) Reference
1 37.2 (35.4-39.0) 1.28 (1.18-1.40) c
2-3 43.3 (41.8-44.8) 1.50 (1.38-1.62) c
4-9 47.3 (45.6-49.0) 1.63 (1.50-1.78) c
≥10 50.1 (47.9-52.4) 1.73 (1.58-1.89) c
Hospitalization within past year
Yes 46.9 (44.4-49.3) 1.13 (1.06-1.19) c
No 41.6 (40.7-42.6) Reference
Usual place for health care
Yes 43.3 (42.3-44.2) 1.37 (1.26-1.48) c
No 31.7 (29.2-34.3) Reference
Health insurance
Yes 43.0 (42.0-43.9) 1.39 (1.27-1.53) c
No 30.9 (28.1-33.8) Reference
Healthcare personnel
Yes 65.1 (62.5-67.7) 1.63 (1.56-1.70) c
No 39.9 (39.0-40.8) Reference
Person with high-risk conditions d
Yes 46.3 (44.7-47.9) 1.14 (1.09-1.18) c
No 40.7 (39.7-41.7) Reference

Note: Boldface indicates statistical significance (P<0.05).

a

Adjusted coverage, adjusted for all variables included in the table, and interactions including age groups and race/ethnicity , education and race/ethnicity, and the U.S.- born status and race/ethnicity.

b

Adjusted prevalence ratios, adjusted for all variables included in the table, and interactions including age groups and race/ethnicity, education and race/ethnicity, and U.S. born status and race/ethnicity.

c

P< 0.05 by t- test for comparison within each covariate category with the indicated reference level.

d

Adults categorized as being at high risk for influenza-related complications reported 1 or more of the following: 1) ever being told by a physician that they had diabetes, emphysema, chronic obstructive pulmonary disease (COPD, starting from the 2012-13 season), coronary heart disease, angina, heart attack, or another heart condition; 2) receiving a diagnosis of cancer during the preceding 12 months (excluding non-melanoma skin cancer) or ever being told by a physician that they had lymphoma, leukemia, or blood cancer; 3) being told by a physician that they had chronic bronchitis or weak or failing kidneys during the preceding 12 months; or 4 ) reporting an asthma episode or attack during the preceding 12 months.