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. 2022 May 10;48(7):1561–1569. doi: 10.1111/jog.15285

Table 2.

The vaccination information and the related factors in the pregnant women

Univariate analysis p‐Value a Multivariate analysis p‐Value a
cOR 95%CI aOR 95%CI
Age group
<20 years Ref.
20–29 4.91 1.92–12.52 <0.001 4.05 1.55–10.63 0.004
30–39 6.18 2.43–15.71 <0.001 5.19 1.98–13.58 <0.001
≧40 6.04 2.32–15.73 <0.001 5.25 1.63–14.23 0.001
Occupation
Housewife Ref.
Employee 1.176 0.99–1.39 0.053 1.15 0.96–1.38 0.128
Public servant 1.362 1.02–1.82 0.035 1.42 1.04–1.94 0.026
Self employed 0.686 0.50–0.95 0.024 0.66 0.46–0.93 0.019
Education 1.392 0.87–2.23 0.168 1.35 0.83–2.20 0.228
Health care workers 1.652 1.31–2.09 <0.001 1.58 1.23–2.03 <0.001
Part‐time 0.889 0.72–1.10 0.283 0.93 0.74–1.18 0.562
Others 0.618 0.41–0.93 0.022 0.69 0.44–1.10 0.120
Weeks of gestation b
Early pregnancy (≤15 weeks) Ref.
Mid‐pregnancy (16–27 weeks) 1.651 1.40–1.95 <0.001 1.65 1.38–1.97 <0.001
Late pregnancy (≥28 weeks) 1.753 1.50–2.05 <0.001 1.69 0.42–2.01 <0.001
Primipara
Yes Ref.
No 0.91 0.80–1.03 0.140 0.90 0.78–1.03 0.131
Fetal number
Single Ref.
Twins or triplets 1.12 0.52–2.34 0.768 1.23 0.55–2.79 0.616
Pregnancy
Natural Ref.
Artificial insemination 1.395 0.95–2.05 0.091 1.30 0.85–1.97 0.226
In vitro fertilization 1.134 0.93–1.38 0.213 1.03 0.82–1.29 0.812
Complications during pregnancy b
All 1.13 0.97–1.31 0.116 n/a
COVID‐19 0.29 0.16–0.53 <0.001 0.30 0.14–0.62 0.001
Gestational hypertension 0.81 0.40–1.62 0.544 0.98 0.42–2.26 0.957
Gestational diabetes mellitus 1.31 0.92–1.87 0.137 1.23 0.82–1.86 0.317
Anemia 1.14 0.93–1.39 0.210 1.02 0.82–1.28 0.849
Threatened premature delivery 0.97 0.78–1.21 0.791 0.84 0.66–1.07 0.150
Others 1.58 1.01–2.48 0.046 1.54 0.93–2.55 0.095
Diseases under treatment b
All 1.29 1.07–1.55 0.007 n/a
Asthma 1.18 0.73–1.91 0.792 1.21 0.71–2.05 0.484
Malignancy n/a
Thyroid disease 1.35 0.92–1.98 0.126 1.23 0.82–1.85 0.318
Autoimmune disease 1.19 0.46–3.09 0.719 1.10 0.42–2.90 0.853
Allergy 1.65 1.14–2.37 0.007 1.66 1.14–2.42 0.008
Inflammatory bowel disease 1.56 0.47–5.22 0.470 1.65 0.49–5.62 0.421
Hypertension 0.81 0.30–12.17 0.670 0.87 0.27–2.79 0.813
Diabetes mellitus 1.06 0.41–2.78 0.901 1.16 0.39–3.44 0.788
Heart disease 0.53 0.10–2.74 0.449 0.70 0.13–3.69 0.673
Kidney disease 0.85 0.18–4.01 0.837 0.68 0.14–3.26 0.624
Mental disorder 1.36 0.80–2.32 0.254 1.24 0.72–2.13 0.432
Others 1.18 0.86–1.63 0.306 1.17 0.84–1.64 0.362

Abbreviations: aOR, adjusted odds ratio; CI, confidence interval; cOR: crude odds ratio.

a

Using the logistic regression model.

b

Missing values were excluded in the weeks of gestation (n = 10), complications during pregnancy (n = 160), and diseases under treatment (n = 482).