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Table 1 Participants background information

From: COVID-19 mRNA vaccination status and concerns among pregnant women in Japan: a multicenter questionnaire survey

 

Postpartum women vaccinated during pregnancy

Postpartum women not vaccinated during pregnancy

p-value*

Maternal age (years)

35 (31–38)

34 (31–37)

0.165

Gravidity (including the current pregnancy)

2 (1–2)

2 (1–2)

0.355

Parity (including the current pregnancy)

1 (1–2)

1 (1–2)

0.294

Natural pregnancy rate

68.6 (569/829)

70.5 (153/217)

0.596

Height (cm)

159.1 ± 5.5

158.7 ± 5.3

0.439

Pre pregnancy Weight (kg)

54.2 ± 9.9

53.8 ± 8.4

0.574

Smoking rate

3.0 (25/831)

4.1 (9/217)

0.399

Singleton pregnancy rate

97.1 (807/831)

95.7 (202/211)

0.308

Past medical history

 Asthma

10.1 (84/831)

14.8 (32/216)

0.049

 Diabetes

9.9 (83/833)

13.0 (28/216)

0.202

 Hypertension

8.5 (71/833)

7.4 (16/216)

0.596

 Malignant disease

1.9 (16/833)

1.9 (4/216)

0.947

 Autoimmune disease

2.9 (24/833)

4.17 (9/216)

0.335

Allergy

 Drug allergy

10.7 (89/831)

14.8 (32/217)

0.098

 Food allergy

14.2 (118/833)

16.6 (36/217)

0.369

  1. Data are shown as the mean ± standard deviation or median (interquartile range) or percentage (Number of applicable women/Number of women targeted for analysis). *Student's t-test, or χ2 test
  2. The number of subjects is calculated by excluding the missing values from the total number of each group