Characteristics of study participants (recruited Apr. 20, 2021–Feb 8, 2022), stratified by SARS-CoV-2 vaccination status
| Characteristic | No. (%) of participants* | p value† | ||
|---|---|---|---|---|
| Overall n = 603 | Vaccinated or intention to vaccinate n = 505 | Not vaccinated n = 98 | ||
| Age, yr, mean ± SD | 33.5 ± 5.5 | 33.6 ± 5.8 | 32.9 ± 4.7 | > 0.9 |
| Gestational age, wk, mean ± SD | 22.5 ± 9.3 | 22.0 ± 9.4 | 25.7 ± 8.8 | < 0.001 |
| Body mass index,‡ mean ± SD | 24.4 ± 5.4 | 24.3 ± 5.3 | 25.0 ± 5.9 | 0.2 |
| Trimester of pregnancy at the time of survey completion | ||||
| 1st trimester | 98 (16.3) | 89 (17.6) | 9 (9.2) | |
| 2nd trimester | 236 (39.1) | 203 (40.2) | 33 (33.7) | |
| 3rd trimester | 269 (44.6) | 213 (42.2) | 56 (57.1) | 0.01 |
| Received influenza vaccine in 2020/21 | 215 (35.7) | 203 (40.2) | 10 (10.2) | < 0.001 |
| Health care professional ensuring pregnancy follow-up§ | ||||
| Family physician | 187 (31.0) | 158 (31.3) | 29 (29.6) | |
| Obstetrician | 388 (64.3) | 322 (63.8) | 66 (67.3) | |
| Midwife | 56 (9.3) | 48 (9.5) | 8 (8.2) | |
| Nurse practitioner | 37 (6.1) | 32 (6.3) | 5 (5.1) | |
| Years of education, mean ± SD | 17.0 ± 3.9 | 17.4 ± 3.7 | 15.0 ± 4.7 | < 0.001 |
| Employment status | ||||
| Employed | 451 (74.8) | 386 (76.4) | 65 (66.3) | |
| Self-employed | 57 (9.5) | 50 (9.9) | 7 (7.1) | |
| Student or intern | 37 (6.1) | 32 (6.3) | 5 (5.1) | |
| Unemployed | 22 (3.6) | 10 (2.0) | 11 (11.2) | |
| Receiving welfare support | 24 (4.0) | 19 (3.8) | 6 (6.1) | < 0.001 |
| Prefer not to answer | 12 (2.0) | 8 (1.6) | 4 (4.1) | |
| Ethnic background | ||||
| Aboriginal (North American Indians, Métis or Inuit [Inuk]) | 3 (0.5) | 3 (0.6) | – | |
| Asian | 11 (1.8) | 7 (1.4) | 5 (5.1) | |
| Black | 14 (2.3) | 7 (1.4) | 7 (7.1) | |
| White | 538 (89.2) | 464 (91.9) | 74 (75.5) | |
| Hispanic | 13 (2.2) | 10 (2.0) | 1 (1.0) | |
| Other | 10 (1.7) | 10 (2.0) | 7 (7.1) | |
| Prefer not to answer | 15 (2.5) | 4 (0.8) | 4 (4.1) | – |
| Living situation | ||||
| Living alone or single mother | 14 (2.3) | 12 (2.4) | 1 (1.0) | |
| Living with a partner or married | 578 (95.9) | 486 (96.2) | 92 (93.9) | |
| Living with parents or family | 11 (1.8) | 7 (1.4) | 5 (5.1) | 0.04 |
| Area of residence | ||||
| Urban | 271 (44.9) | 226 (44.8) | 45 (45.9) | |
| Suburban | 256 (42.5) | 220 (43.6) | 36 (36.7) | |
| Rural | 76 (12.6) | 59 (11.7) | 17 (17.3) | 0.2 |
| Household income, $Can | ||||
| < 60 000 | 78 (12.9) | 52 (10.3) | 26 (26.5) | |
| 60 001–90 000 | 83 (13.8) | 68 (13.5) | 15 (15.3) | |
| 90 001–120 000 | 125 (20.7) | 110 (21.8) | 15 (15.3) | |
| 120 001–150 000 | 109 (18.1) | 95 (18.8) | 14 (14.3) | |
| > 150 001 | 172 (28.5) | 157 (31.1) | 15 (15.3) | < 0.001 |
| Prefer not to answer | 36 (6.0) | 23 (4.6) | 13 (13.3) | |