Factors Associated with Antenatal Influenza Vaccination in a Medically Underserved Population
Table 1
Demographic and clinical characteristics of pregnant women with deliveries by influenza vaccination status, July 1, 2016–June 30, 2018.
Characteristic
Total study population
No influenza vaccination (50.2%)
Influenza vaccination (49.8%)
Age at delivery (years)
<21
571 (15.3)
308 (16.5)
263 (14.2)
21–34
2594 (69.7)
1296 (69.3)
1298 (70.1)
>34
558 (15.0)
266 (14.2)
292 (15.8)
Race/ethnicity
Black, non-Hispanic
2529 (68.4)
1405 (75.7)
1124 (61.1)
Hispanic
834 (22.6)
299 (16.1)
535 (29.1)
Other, non-Hispanic
216 (5.9)
78 (4.2)
138 (7.5)
White, non-Hispanic
116 (3.1)
73 (3.9)
43 (2.3)
Interpreter use
No interpreter
2872 (77.1)
1552 (83.0)
1320 (71.2)
Spanish
570 (15.3)
202 (10.8)
368 (19.9)
Other language
281 (7.6)
116 (6.2)
165 (8.9)
Parity
0
868 (23.3)
444 (23.8)
424 (22.9)
1
279 (7.5)
132 (7.1)
147 (7.9)
2
901 (24.2)
424 (22.7)
477 (25.7)
≥3
1673 (45.0)
868 (46.5)
805 (43.4)
Chronic medical condition
Asthma
357 (9.6)
185 (9.9)
172 (9.3)
Cardiovascular disease
33 (0.9)
18 (1.0)
15 (0.8)
Diabetes mellitus
96 (2.6)
34 (1.8)
62 (3.3)
HIV-positive status
81 (2.2)
34 (1.8)
47 (2.5)
Tobacco use in pregnancy
414 (11.4)
260 (14.2)
154 (8.6)
Prenatal care adequacy
Inadequate
1614 (43.5)
912 (49.0)
702 (38.0)
Intermediate
553 (14.9)
183 (9.8)
370 (20.0)
Adequate
696 (18.7)
221 (11.9)
475 (25.7)
Adequate plus
249 (6.7)
79 (4.2)
170 (9.2)
Unknown
601 (16.2)
468 (25.1)
133 (7.2)
Primary insurance type
Self-pay
229 (6.2)
40 (7.5)
89 (4.8)
Medicaid
3275 (87.9)
1613 (86.3)
1662 (89.6)
Medicare
19 (0.5)
13 (0.7)
6 (0.3)
Commercial
201 (5.4)
104 (5.6)
97 (5.2)
Influenza vaccination was defined as documented administration of influenza vaccine in the Grady Health System EHR, the Georgia Registry of Immunization Transactions and Services, or self-reported receipt of influenza vaccine within the time frame of twelve months before delivery and the delivery date. Other, non-Hispanic race/ethnicity includes Asian, Hawaiian/other Pacific Islander, Native American, and multiple races. Data are (%). Data were missing for <5% of all variables.
