| Total responses, n | Vaccinated, n (%) (n = 109; 55.1%) | Unvaccinated, n (%) (n = 89; 44.9%) | OR | 95% CI | |
|---|---|---|---|---|---|
| Mean age at delivery (SD) | 190 | 34 (4.9) | 33.2 (5.8) | ||
| Age at delivery | 190 | ||||
| <20 years | 1 (1.0) | 2 (2.4) | 0.56 | 0.04 to 7.2 | |
| 20–24 years | 6 (5.7) | 5 (5.9) | 1.3 | 0.3 to 5.9 | |
| 25–29 years | 9 (8.6) | 10 (11.8) | 1 | – | |
| 30–34 years | 30 (28.6) | 31 (36.5) | 1.08 | 0.38 to 3.0 | |
| 35–39 years | 49 (46.7) | 25 (29.4) | 2.17 | 0.78 to 6.0 | |
| ≥40 years | 10 (9.5) | 12 (14.1) | 0.9 | 0.27 to 3.17 | |
| Maternal socioeconomic group | 184 | ||||
| Professional, manager, employer | 57 (55.9) | 25 (30.5) | 1 | – | |
| Home duties | 8 (7.8) | 11 (13.4) | 0.32 | 0.11 to 0.89 | |
| Non-manual | 28 (27.5) | 36 (43.9) | 0.34 | 0.17 to 0.67 | |
| Manual | 2 (2.0) | 3 (3.7) | 0.29 | 0.05 to 1.86 | |
| Unemployed | 3 (2.9) | 5 (6.1) | 0.26 | 0.06 to 1.19 | |
| Non-classifiable | 4 (3.9) | 2 (2.4) | 0.87 | 0.15 to 5.1 | |
| Nationality | 198 | ||||
| Non-Irish | 18 (16.%) | 21 (23.6) | 1 | – | |
| Irish | 91 (83.4) | 68 (76.4) | 1.56 | 0.77 to 3.15 | |
| Marital status | 198 | ||||
| Not married | 31 (28.4) | 34 (38.2) | 1 | – | |
| Married | 78 (71.6) | 55 (61.8) | 1.55 | 0.86 to 2.82 | |
| Nulliparous | 198 | ||||
| No | 64 (58.7) | 62 (69.7) | 1 | – | |
| Yes | 45 (41.3) | 27 (30.3) | 1.6 | 0.89 to 2.92 - | |
| Obstetric care | 198 | ||||
| Private or semi-private | 65 (59.6) | 34 (38.2) | 1 | – | |
| Public | 44(40.4) | 55 (61.8) | 0.42 | 0.24 to 0.74 | |
| Smoking status | 197 | ||||
| Non-smoker | 101 (92.7) | 73 (83.0) | 1 | – | |
| Smoker | 8 (7.3) | 15 (17.0) | 0.38 | 0.15 to 0.94 | |
| Comorbiditya | 193 | ||||
| No | 84 (77.1) | 72 (85.7) | 1 | – | |
| Yes | 25 (22.9) | 12 (14.3) | 1.79 | 0.84 to 3.8 | |
| Level of completed education | 193 | ||||
| University degree | 69 (64.5) | 42 (48.8) | 1 | – | |
| Non-university higher-level course | 17 (15.9) | 23 (26.7) | 0.45 | 0.22 to 0.94 | |
| School completion exam or equivalent | 17 (15.9) | 14 (16.3) | 0.74 | 0.33 to 1.65 | |
| Mid-school exam or equivalent | 4 (3.7) | 7 (8.1) | 0.35 | 0.09 to 1.26 | |
| Vaccinated in previous pregnancy | 125 | ||||
| No | 23 (35.4) | 48 (80.0) | 1 | – | |
| Yes | 42 (64.6) | 12 (20.0) | 7 | 3.24 to 16.44 | |
| Received information on vaccine this pregnancy | 194 | ||||
| No | 5 (4.6) | 42 (48.8) | 1 | – | |
| Yes | 103 (95.4) | 44 (51.2) | 19.6 | 7.29 to 53.0 | |
| Healthcare provider advised vaccination | 194 | ||||
| No | 10 (9.3) | 40 (46.0) | 1 | – | |
| Yes | 97 (90.7) | 47 (54.0) | 8.25 | 3.8 to 17.93 | |
| Healthcare provider offered vaccination | 193 | ||||
| No | 18 (17.0) | 56 (64.4) | 1 | – | |
| Yes | 88 (83.0) | 31 (35.6) | 8.83 | 4.5 to 17.23 |
aComorbidity for which influenza vaccination is indicated, for example chronic heart disease, chronic liver disease, chronic renal failure, chronic respiratory disease, chronic neurological disease, diabetes mellitus, Down syndrome, haemoglobinopathies, morbid obesity, immunosuppression due to to disease or treatment, children aged ≥6 months with any condition that can affect lung function, or on long-term aspirin therapy (because of the risk of Reyes syndrome). 18
CI = confidence interval. OR = odds ratio.