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 |