Baseline demographics
|
Astra Zeneca
N=441
|
Pfizer BioNTech
N=513
|
p-value
|
Maternal age – years
|
30.0±4.4
|
30.8±4.5
|
<0.001
|
Previous pregnancies – n (%)
|
|
|
<0.001
|
0
|
240 (54.4)
|
206 (40.2)
|
|
1
|
92 (20.9)
|
158 (30.8)
|
|
2
|
87 (19.7)
|
119 (23.2)
|
|
≥ 3
|
22 (5.0)
|
30 (5.8)
|
|
Type of pregnancy – n (%)
|
|
|
0.009
|
Spontaneous
|
385 (87.3)
|
475 (92.6)
|
|
In Vitro Fertilization
|
56 (12.7)
|
38 (7.4)
|
|
Number of vaccine doses – n (%)
|
|
|
<0.001
|
Only 1 dose
|
176 (39.9)
|
99 (19.3)
|
|
2 doses
|
265 (60.1)
|
414 (80.7)
|
|
Gestational age at vaccination – weeks
|
31.9±4.5
|
32.4±4.0
|
0.067
|
High blood pressure at vaccination
|
0 (0.0)
|
3 (0.6)
|
.
|
Diabetes at vaccination
|
58 (13.2)
|
62 (12.1)
|
0.691
|